more abstraction of stylesheet. less labels at low zooms. change opacity of roads at low zooms making them more visible.

@path_halo_opacity: 0.7;
@path_halo_colour: white;

/* highway labels */
@highway_face_name: "Liberation Sans Regular";
@highway_text_fill: white;
@highway_halo_fill: black;
@highway_halo_radius: 2.0;

#highway-labels[highway='footway'][zoom > 14] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='cycleway'][zoom > 14] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='path'][zoom > 14] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='track'][zoom > 13] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}

#highway-labels[highway='service'][zoom > 16] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='residential'][zoom > 15] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='unclassified'][zoom > 14] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='tertiary'][zoom > 14] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='secondary'][zoom > 14] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='primary'][zoom > 13] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='trunk'][zoom > 12] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='motorway'][zoom > 11] {
  text-name: "[name]";
  text-face-name: @highway_face_name;
  text-fill: @highway_text_fill;
  text-placement: line;
  text-halo-fill: @highway_halo_fill;
  text-halo-radius: @highway_halo_radius;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}

/* default style for all path, footway, track, cycleways and roads */
.highway {
  line-color: #000000;
  line-opacity: 0.5;
  line-join: round;
  line-cap: round;

  line-width: 1;
}

/* defaults for roads with cars */
.road[zoom > 11] {
  ::oneway_arrow[oneway='yes'][zoom > 14] {
    marker-type: arrow;

    marker-width: 2;
    marker-line-width: 2;

    marker-opacity: 1.0;
    marker-line-opacity: 1.0;

    marker-fill: white;
    marker-line-color: white;

    marker-spacing: 100;
  }

  line-color: #000000;
  line-join: round;
  line-cap: round;

  line-width: 1;

  [zoom > 17] { line-width: 15; line-opacity: 0.5; }
  [zoom = 17] { line-width: 10; line-opacity: 0.5; }
  [zoom = 16] { line-width: 5; line-opacity: 0.5; }
  [zoom = 15] { line-width: 2.25; line-opacity: 0.6; }
  [zoom = 14] { line-width: 1.5; line-opacity: 0.7; }
  [zoom = 13] { line-width: 1; line-opacity: 0.8; }
  [zoom = 12] { line-width: 0.5; line-opacity: 0.8; }

  ::bridge[bridge='yes'] {
    /*
    ideally we would draw two lines outside the existing line,
    but the current compositing method in mapnik won't allow this
    so easily with transparency

    line-color: #000000;
    line-opacity: 0.5;
    line-join: round;
    line-cap: round;

    [zoom > 17] { line-width: 20; }
    [zoom = 17] { line-width: 15; }
    [zoom = 16] { line-width: 7; }
    [zoom = 15] { line-width: 3; }
    [zoom = 14] { line-width: 2; }
    [zoom = 13] { line-width: 1.5; }
    [zoom = 12] { line-width: 0.75; }
    */
  }

}

.highway#footway[zoom > 13] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 9 }
    [zoom = 18] { line-width: 6 }
    [zoom = 17] { line-width: 4 }
    [zoom < 17] { line-width: 2 }
  }

  line-color: #FF0000;
  line-dasharray: 2,2;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 2,8 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 1,4 }
  [zoom < 17] { line-width: 1.5; line-dasharray: 1,2 }

  [highway='steps']{
    line-cap: butt;

    [zoom > 18] { line-dasharray: 3,4 }
    [zoom = 18] { line-dasharray: 2,3 }
    [zoom < 18] { line-dasharray: 1,2 }
  }

}

.highway#path[zoom > 12] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 9 }
    [zoom = 18] { line-width: 6 }
    [zoom = 17] { line-width: 4 }
    [zoom < 17] { line-width: 2 }
  }
  line-color: #000000;
  line-dasharray: 2,2;
  line-opacity: 1.0;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 2,8 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 1,4 }
  [zoom < 17] { line-width: 1.5; line-dasharray: 1,2 }

}

.highway#track[zoom > 12] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 16 }
    [zoom = 18] { line-width: 10 }
    [zoom = 17] { line-width: 6 }
    [zoom = 16] { line-width: 4.5 }
    [zoom = 15] { line-width: 3.2 }
    [zoom = 14] { line-width: 3 }
    [zoom = 13] { line-width: 2.4 }
  }

  line-color: #6d4f15;
  line-opacity: 1.0;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 3,4 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 3,4 }
  [zoom = 16] { line-width: 2.1; line-dasharray: 3,4 }
  [zoom = 15] { line-width: 1.8; line-dasharray: 3,4 }
  [zoom = 14] { line-width: 1.5; line-dasharray: 3,4 }
  [zoom = 13] { line-width: 1.2  ; line-dasharray: 3,4 }

}

.highway#cycleway[zoom > 12] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 9 }
    [zoom = 18] { line-width: 6 }
    [zoom = 17] { line-width: 4 }
    [zoom < 17] { line-width: 2 }
  }

  line-color: #0900ff;
  line-dasharray: 2,2;
  line-opacity: 1.0;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 2,8 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 1,4 }
  [zoom < 17] { line-width: 1.5; line-dasharray: 1,2 }

}

.road#service[zoom > 11] {
  [zoom > 17] { line-width: 7.5; }
  [zoom = 17] { line-width: 5; }
  [zoom = 16] { line-width: 2.5; }
  [zoom = 15] { line-width: 1; }
  [zoom = 14] { line-width: 0.75; }
  [zoom = 13] { line-width: 0.5; }
  [zoom = 12] { line-width: 0.25; }

  [service='parking_aisle'][zoom > 14] {
    [zoom > 17] { line-width: 3; }
    [zoom = 17] { line-width: 2.5; }
    [zoom = 16] { line-width: 1.25; }
    [zoom = 15] { line-width: 0.25; }
  }
}

#turning-circle[zoom > 11] {
  marker-type: ellipse;
  marker-placement: point;

  marker-fill: #000000;
  marker-opacity: 0.5;
  marker-line-width: 0;

  [zoom > 17] { marker-width: 10; }
  [zoom = 17] { marker-width: 7.5; }
  [zoom = 16] { marker-width: 3.5; }
  [zoom = 15] { marker-width: 1.75; }
  [zoom = 14] { marker-width: 1; }
  [zoom = 13] { marker-width: 0.75; }
  [zoom = 12] { marker-width: 0.3; }
}

.road#residential[zoom > 11] {
  ::living_street[highway='living_street'][zoom > 14] {
    line-cap: square;
    line-dasharray: 3,3;
    line-color: #76d276;

    [zoom > 17] { line-width: 10; }
    [zoom = 17] { line-width: 7.5; }
    [zoom = 16] { line-width: 3.5; }
    [zoom = 15] { line-width: 1.75; }
    [zoom = 14] { line-width: 1; }
    [zoom = 13] { line-width: 0.75; }
    [zoom = 12] { line-width: 0.3; }
  }

  [zoom > 17] { line-width: 10; }
  [zoom = 17] { line-width: 7.5; }
  [zoom = 16] { line-width: 3.5; }
  [zoom = 15] { line-width: 1.75; }
  [zoom = 14] { line-width: 1; }
  [zoom = 13] { line-width: 0.75; }
  [zoom = 12] { line-width: 0.3; }

}

.road#unclassified{
}

.road#tertiary{
  line-color: #faf555;
}

.road#secondary{
  line-color: #d46833;
}

.road#primary{
  line-color: #cc3737;
}

.road#trunk{
  line-color: #243a7a;
}

.road#motorway{
  line-color: #7a2424;
}

@path_halo_opacity: 0.7;
@path_halo_colour: white;

/* highway labels */
#highway-labels[highway='footway'][zoom > 14] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='cycleway'][zoom > 14] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='path'][zoom > 14] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='track'][zoom > 13] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}

#highway-labels[highway='service'][zoom > 16] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='residential'][zoom > 15] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='unclassified'][zoom > 14] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='tertiary'][zoom > 14] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='secondary'][zoom > 13] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='primary'][zoom > 12] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='trunk'][zoom > 12] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}
#highway-labels[highway='motorway'][zoom > 11] {
  text-name: "[name]";
  text-face-name: "Liberation Sans Regular";
  text-fill: white;
  text-placement: line;
  text-halo-fill: black;
  text-halo-radius: 2.0;

  [zoom > 21] { text-size: 30; }
  [zoom = 21] { text-size: 25; }
  [zoom = 20] { text-size: 20; }
  [zoom = 19] { text-size: 15; }
  [zoom = 18] { text-size: 13; }
  [zoom = 17] { text-size: 12; }
  [zoom = 16] { text-size: 11; }
  [zoom = 15] { text-size: 11; }
  [zoom = 14] { text-size: 10; }
  [zoom = 13] { text-size: 8; }
  [zoom = 12] {text-size: 8; }
}

.highway {
  line-color: #000000;
  line-opacity: 0.5;
  line-join: round;
  line-cap: round;

  line-width: 1;
}

.road[zoom > 11] {
  ::oneway_arrow[oneway='yes'][zoom > 14] {
    marker-type: arrow;

    marker-width: 2;
    marker-line-width: 2;

    marker-opacity: 1.0;
    marker-line-opacity: 1.0;

    marker-fill: white;
    marker-line-color: white;

    marker-spacing: 100;
  }

  line-color: #000000;
  line-opacity: 0.5;
  line-join: round;
  line-cap: round;

  line-width: 1;

  [zoom > 17] { line-width: 15; }
  [zoom = 17] { line-width: 10; }
  [zoom = 16] { line-width: 5; }
  [zoom = 15] { line-width: 2.25; }
  [zoom = 14] { line-width: 1.5; }
  [zoom = 13] { line-width: 1; }
  [zoom = 12] { line-width: 0.5; }

  ::bridge[bridge='yes'] {
    line-color: #000000;
    line-opacity: 0.5;
    line-join: round;
    line-cap: round;

    [zoom > 17] { line-width: 20; }
    [zoom = 17] { line-width: 15; }
    [zoom = 16] { line-width: 7; }
    [zoom = 15] { line-width: 3; }
    [zoom = 14] { line-width: 2; }
    [zoom = 13] { line-width: 1.5; }
    [zoom = 12] { line-width: 0.75; }
  }

}

.highway#footway[zoom > 9] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 9 }
    [zoom = 18] { line-width: 6 }
    [zoom = 17] { line-width: 4 }
    [zoom < 17] { line-width: 2 }
  }

  line-color: #FF0000;
  line-dasharray: 2,2;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 2,8 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 1,4 }
  [zoom < 17] { line-width: 1.5; line-dasharray: 1,2 }

  [footway='sidewalk']{
    line-color: #0000FF;
  }

  [highway='steps']{
    line-cap: butt;

    [zoom > 18] { line-dasharray: 3,4 }
    [zoom = 18] { line-dasharray: 2,3 }
    [zoom < 18] { line-dasharray: 1,2 }
  }

}

.highway#path[zoom > 9] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 9 }
    [zoom = 18] { line-width: 6 }
    [zoom = 17] { line-width: 4 }
    [zoom < 17] { line-width: 2 }
  }
  line-color: #000000;
  line-dasharray: 2,2;
  line-opacity: 1.0;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 2,8 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 1,4 }
  [zoom < 17] { line-width: 1.5; line-dasharray: 1,2 }

}

.highway#track[zoom > 12] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 16 }
    [zoom = 18] { line-width: 10 }
    [zoom = 17] { line-width: 6 }
    [zoom = 16] { line-width: 4.5 }
    [zoom = 15] { line-width: 3.2 }
    [zoom = 14] { line-width: 3 }
    [zoom = 13] { line-width: 2.4 }
  }

  line-color: #6d4f15;
  line-opacity: 1.0;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 3,4 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 3,4 }
  [zoom = 16] { line-width: 2.1; line-dasharray: 3,4 }
  [zoom = 15] { line-width: 1.8; line-dasharray: 3,4 }
  [zoom = 14] { line-width: 1.5; line-dasharray: 3,4 }
  [zoom = 13] { line-width: 1.2  ; line-dasharray: 3,4 }

}

.highway#cycleway[zoom > 9] {
  ::halo{
    line-color: @path_halo_colour;
    line-opacity: @path_halo_opacity;

    [zoom > 18] { line-width: 9 }
    [zoom = 18] { line-width: 6 }
    [zoom = 17] { line-width: 4 }
    [zoom < 17] { line-width: 2 }
  }

  line-color: #0900ff;
  line-dasharray: 2,2;
  line-opacity: 1.0;

  [zoom > 18] { line-width: 8  ; line-dasharray: 2,16 }
  [zoom = 18] { line-width: 5  ; line-dasharray: 2,8 }
  [zoom = 17] { line-width: 3  ; line-dasharray: 1,4 }
  [zoom < 17] { line-width: 1.5; line-dasharray: 1,2 }

}

.road#service[zoom > 11] {
  [zoom > 17] { line-width: 7.5; }
  [zoom = 17] { line-width: 5; }
  [zoom = 16] { line-width: 2.5; }
  [zoom = 15] { line-width: 1; }
  [zoom = 14] { line-width: 0.75; }
  [zoom = 13] { line-width: 0.5; }
  [zoom = 12] { line-width: 0.25; }

  [service='parking_aisle'][zoom > 14] {
    [zoom > 17] { line-width: 3; }
    [zoom = 17] { line-width: 2.5; }
    [zoom = 16] { line-width: 1.25; }
    [zoom = 15] { line-width: 0.25; }
  }
}

#turning-circle[zoom > 11] {
  marker-type: ellipse;
  marker-placement: point;

  marker-fill: #000000;
  marker-opacity: 0.5;
  marker-line-width: 0;

  [zoom > 17] { marker-width: 10; }
  [zoom = 17] { marker-width: 7.5; }
  [zoom = 16] { marker-width: 3.5; }
  [zoom = 15] { marker-width: 1.75; }
  [zoom = 14] { marker-width: 1; }
  [zoom = 13] { marker-width: 0.75; }
  [zoom = 12] { marker-width: 0.3; }
}

.road#residential[zoom > 11] {
  [highway='living_street'] {
    line-color: #76d276;
  }

  [zoom > 17] { line-width: 10; }
  [zoom = 17] { line-width: 7.5; }
  [zoom = 16] { line-width: 3.5; }
  [zoom = 15] { line-width: 1.75; }
  [zoom = 14] { line-width: 1; }
  [zoom = 13] { line-width: 0.75; }
  [zoom = 12] { line-width: 0.3; }

}

.road#unclassified{
}

.road#tertiary{
  line-color: #faf555;
}

.road#secondary{
  line-color: #d46833;
}

.road#primary{
  line-color: #cc3737;
}

.road#trunk{
  line-color: #243a7a;
}

.road#motorway{
  line-color: #7a2424;
}


Fix broken link in geography-class.

Fix broken link in geography-class.

/**********************************************************

'Geography Class'
=================

Note that this map doing some rather complex things thus
slowish rendering should not be surprising. A pre-rendered
demo is online at <http://tiles.mapbox.com/mapbox/map/geography-class>

Hover Interaction & Embedded Data
---------------------------------

When you move your cursor around the map you should see the
name and flag of the country you are hovering over appear
in the top right. You can pull any attributes from a data
layer to form tooltips like this. Here, we are pulling a
text attribute and a base64-encoded PNG image from a GeoJSON
file of country polygons. Click on the settings wrench at the
top right, then on the 'Tooltips' tab to see how this was
set up.

Layers overview
---------------

### country-interaction [countries_interaction.geojson]

This is an invisible layer used to add hover interactivity
to the map. It is derived fro the 1:50M resolution Natural
Earth dataset. GeoJSON was chosen over shapefile in this
instance to allow for the inclusion of base64-encoded PNG
data (not possible in a DBF due to the limit of
255 bytes per cell).

### paper [world_extent_merc.geojson]

The shapefile is a rectangle extending to the bounds of the
map filled with a repeating transparent pattern to give the
map a folded paper texture.

### cities [populated_places_by_pop.zip]

This is essentially Natural Earth's Populated Places
shapefile, but the elements have been reordered such by
population (descending). This is to take advantage of the
fact that Mapnik will give priority to elements stored first
in the datasource. Using various classification attributes
in the shapefile, only certain cities will be shown at
certain zoom levels.

### country-name [country-labels.zip]

Labeled points of the world's country names. Derived from
Natural Earth Data but hand-tweaked by MapBox.

### geo-lines [geographic-lines.zip]

Important lines such as the equator, Arctic and Antarctic
circles, and the international date line.

### admin-0-line-land [admin-0-line-land.zip]

These are international borders that occur over land or
lakes. International maritime borders are a separate layer.

### lakes [lakes.zip]

The world's lakes. The style is designed such that smaller
lakes only appear as you zoom in.

### rivers [rivers_lake_centerlines_scale_ranks.zip]

### country [admin_0_countries.zip]

Countries - the rainbow.mss stylesheet colors each of these
individually.

### land-glow [admin_0_countries.zip]

A copy of the country layer providing the shadow/glow around
the continents.

***********************************************************************/

@water: #ddeeff;
@land: #ffffdd;
@line: #226688;

/* Water bodies */
Map {
  background-color: @water;
}

/* Required to 'activate' the polygons for interactivity */
#country-interaction {
  polygon-opacity:0;
}

#lakes[ScaleRank<3][zoom=3],
#lakes[ScaleRank<4][zoom=4],
#lakes[ScaleRank<5][zoom=5],
#lakes[ScaleRank<6][zoom>=6] {
  polygon-fill:@water;
  line-color:darken(@water, 20%);
  line-width:0.3;
}
#lakes[ScaleRank<3][zoom=3] {
  line-width:0.4;
}
#lakes[ScaleRank<4][zoom=4] {
  line-width:0.5;
}
#lakes[ScaleRank<5][zoom=5] {
  line-width:0.6;
}
#lakes[ScaleRank<6][zoom>=6] {
  line-width:0.8;
}

#rivers[SCALERANK=1][zoom>=3],
#rivers[SCALERANK=2][zoom>=4],
#rivers[SCALERANK=3][zoom>=5],
#rivers[SCALERANK=4][zoom>=5],
#rivers[SCALERANK=5][zoom>=6],
#rivers[SCALERANK=6][zoom>=6],
#rivers[SCALERANK=7][zoom>=7],
#rivers[SCALERANK=8][zoom>=7],
#rivers[SCALERANK=9][zoom>=8] {
  line-color:@line * 1.5;
  line-join:round;
}
#rivers[SCALERANK=1][zoom=3],
#rivers[SCALERANK=2][zoom=4],
#rivers[SCALERANK=3][zoom=5],
#rivers[SCALERANK=4][zoom=5],
#rivers[SCALERANK=5][zoom=6],
#rivers[SCALERANK=6][zoom=6],
#rivers[SCALERANK=7][zoom=7],
#rivers[SCALERANK=8][zoom=7],
#rivers[SCALERANK=9][zoom=8] {
  line-width:0.2;
  line-opacity:0.4;
}
#rivers[SCALERANK=1][zoom=4],
#rivers[SCALERANK=2][zoom=5],
#rivers[SCALERANK=3][zoom=6],
#rivers[SCALERANK=4][zoom=6],
#rivers[SCALERANK=5][zoom=7],
#rivers[SCALERANK=6][zoom=7],
#rivers[SCALERANK=7][zoom=8],
#rivers[SCALERANK=8][zoom=8],
#rivers[SCALERANK=9][zoom=9] {
  line-width:0.4;
  line-opacity:0.6;
}
#rivers[SCALERANK=1][zoom=5],
#rivers[SCALERANK=2][zoom=6],
#rivers[SCALERANK=3][zoom=7],
#rivers[SCALERANK=4][zoom=7],
#rivers[SCALERANK=5][zoom=8],
#rivers[SCALERANK=6][zoom=8],
#rivers[SCALERANK=7][zoom=9],
#rivers[SCALERANK=8][zoom=9],
#rivers[SCALERANK=9][zoom=10] {
  line-width:0.6;
  line-opacity:0.8;
}
#rivers[SCALERANK=1][zoom=6],
#rivers[SCALERANK=2][zoom=7],
#rivers[SCALERANK=3][zoom=8],
#rivers[SCALERANK=4][zoom=8],
#rivers[SCALERANK=5][zoom=9],
#rivers[SCALERANK=6][zoom=9],
#rivers[SCALERANK=7][zoom=10],
#rivers[SCALERANK=8][zoom=10],
#rivers[SCALERANK=9][zoom=11] {
  line-width:0.8;
  line-opacity:1;
}

#glacier {
  polygon-fill:#fff;
  polygon-opacity:0.5;
}

/* Useful/significant lines */
#geo-lines[ScaleRank<10] {
  line-color:@line;
  line-dasharray:6,2;
  [zoom=0] { line-width:0.2; }
  [zoom=1] { line-width:0.4; }
  [zoom=2] { line-width:0.6; }
  [zoom=3] { line-width:0.8; }
  [zoom>3] { line-width:1; }
}

.border.country[zoom>1],
.border.disputed[zoom>2] {
  line-width:1;
  line-color:#fff;
  line-join:round;
  .country[FeatureCla='Disputed (please verify)'] {
    [zoom=3] { line-dasharray:4,1; }
    [zoom=4] { line-dasharray:5,2; }
    [zoom=5] { line-dasharray:6,2; }
    [zoom=6] { line-dasharray:8,3; }
    [zoom>6] { line-dasharray:10,3; }
  }
  .disputed[FeatureCla='Breakaway'] {
    [zoom=3] { line-dasharray: 3,2; }
    [zoom=4] { line-dasharray: 4,4; }
    [zoom=5] { line-dasharray: 5,5; }
    [zoom=6] { line-dasharray: 6,6; }
    [zoom>6] { line-dasharray: 8,8; }
  }
  .disputed[FeatureCla='Claim boundary'] {
    line-dasharray: 1,3;
    [zoom>6] { line-dasharray: 2,4; }
  }
  .country[FeatureCla='Indefinite (please verify)'] {
    line-dasharray: 6,1;
  }
}

#state[ADM0_A3="USA"],
#state[ADM0_A3="CAN"],
#state[ADM0_A3="AUS"] {
  [zoom>3] {
    line-color:@line;
    line-opacity:0.25;
    line-width:1.2;
    line-dasharray:6,2,2,2;
  }
}

/* Transparent PNG overlay for paper texture */
#paper[zoom<2] {
  polygon-pattern-file:url(textures/paperfolds_256.png);
}
#paper[zoom>1] {
  polygon-pattern-file:url(textures/paperfolds_512.png);
}

/**********************************************************

'Geography Class'
=================

Note that this map doing some rather complex things thus
slowish rendering should not be surprising. A pre-rendered
demo is online at <http://mapbox.com/tileset/geography-class>

Hover Interaction & Embedded Data
---------------------------------

When you move your cursor around the map you should see the
name and flag of the country you are hovering over appear
in the top right. You can pull any attributes from a data
layer to form tooltips like this. Here, we are pulling a
text attribute and a base64-encoded PNG image from a GeoJSON
file of country polygons. Click on the settings wrench at the
top right, then on the 'Tooltips' tab to see how this was
set up.

Layers overview
---------------

### country-interaction [countries_interaction.geojson]

This is an invisible layer used to add hover interactivity
to the map. It is derived fro the 1:50M resolution Natural
Earth dataset. GeoJSON was chosen over shapefile in this
instance to allow for the inclusion of base64-encoded PNG
data (not possible in a DBF due to the limit of
255 bytes per cell).

### paper [world_extent_merc.geojson]

The shapefile is a rectangle extending to the bounds of the
map filled with a repeating transparent pattern to give the
map a folded paper texture.

### cities [populated_places_by_pop.zip]

This is essentially Natural Earth's Populated Places
shapefile, but the elements have been reordered such by
population (descending). This is to take advantage of the
fact that Mapnik will give priority to elements stored first
in the datasource. Using various classification attributes
in the shapefile, only certain cities will be shown at
certain zoom levels.

### country-name [country-labels.zip]

Labeled points of the world's country names. Derived from
Natural Earth Data but hand-tweaked by MapBox.

### geo-lines [geographic-lines.zip]

Important lines such as the equator, Arctic and Antarctic
circles, and the international date line.

### admin-0-line-land [admin-0-line-land.zip]

These are international borders that occur over land or
lakes. International maritime borders are a separate layer.

### lakes [lakes.zip]

The world's lakes. The style is designed such that smaller
lakes only appear as you zoom in.

### rivers [rivers_lake_centerlines_scale_ranks.zip]

### country [admin_0_countries.zip]

Countries - the rainbow.mss stylesheet colors each of these
individually.

### land-glow [admin_0_countries.zip]

A copy of the country layer providing the shadow/glow around
the continents.

***********************************************************************/

@water: #ddeeff;
@land: #ffffdd;
@line: #226688;

/* Water bodies */
Map {
  background-color: @water;
}

/* Required to 'activate' the polygons for interactivity */
#country-interaction {
  polygon-opacity:0;
}

#lakes[ScaleRank<3][zoom=3],
#lakes[ScaleRank<4][zoom=4],
#lakes[ScaleRank<5][zoom=5],
#lakes[ScaleRank<6][zoom>=6] {
  polygon-fill:@water;
  line-color:darken(@water, 20%);
  line-width:0.3;
}
#lakes[ScaleRank<3][zoom=3] {
  line-width:0.4;
}
#lakes[ScaleRank<4][zoom=4] {
  line-width:0.5;
}
#lakes[ScaleRank<5][zoom=5] {
  line-width:0.6;
}
#lakes[ScaleRank<6][zoom>=6] {
  line-width:0.8;
}

#rivers[SCALERANK=1][zoom>=3],
#rivers[SCALERANK=2][zoom>=4],
#rivers[SCALERANK=3][zoom>=5],
#rivers[SCALERANK=4][zoom>=5],
#rivers[SCALERANK=5][zoom>=6],
#rivers[SCALERANK=6][zoom>=6],
#rivers[SCALERANK=7][zoom>=7],
#rivers[SCALERANK=8][zoom>=7],
#rivers[SCALERANK=9][zoom>=8] {
  line-color:@line * 1.5;
  line-join:round;
}
#rivers[SCALERANK=1][zoom=3],
#rivers[SCALERANK=2][zoom=4],
#rivers[SCALERANK=3][zoom=5],
#rivers[SCALERANK=4][zoom=5],
#rivers[SCALERANK=5][zoom=6],
#rivers[SCALERANK=6][zoom=6],
#rivers[SCALERANK=7][zoom=7],
#rivers[SCALERANK=8][zoom=7],
#rivers[SCALERANK=9][zoom=8] {
  line-width:0.2;
  line-opacity:0.4;
}
#rivers[SCALERANK=1][zoom=4],
#rivers[SCALERANK=2][zoom=5],
#rivers[SCALERANK=3][zoom=6],
#rivers[SCALERANK=4][zoom=6],
#rivers[SCALERANK=5][zoom=7],
#rivers[SCALERANK=6][zoom=7],
#rivers[SCALERANK=7][zoom=8],
#rivers[SCALERANK=8][zoom=8],
#rivers[SCALERANK=9][zoom=9] {
  line-width:0.4;
  line-opacity:0.6;
}
#rivers[SCALERANK=1][zoom=5],
#rivers[SCALERANK=2][zoom=6],
#rivers[SCALERANK=3][zoom=7],
#rivers[SCALERANK=4][zoom=7],
#rivers[SCALERANK=5][zoom=8],
#rivers[SCALERANK=6][zoom=8],
#rivers[SCALERANK=7][zoom=9],
#rivers[SCALERANK=8][zoom=9],
#rivers[SCALERANK=9][zoom=10] {
  line-width:0.6;
  line-opacity:0.8;
}
#rivers[SCALERANK=1][zoom=6],
#rivers[SCALERANK=2][zoom=7],
#rivers[SCALERANK=3][zoom=8],
#rivers[SCALERANK=4][zoom=8],
#rivers[SCALERANK=5][zoom=9],
#rivers[SCALERANK=6][zoom=9],
#rivers[SCALERANK=7][zoom=10],
#rivers[SCALERANK=8][zoom=10],
#rivers[SCALERANK=9][zoom=11] {
  line-width:0.8;
  line-opacity:1;
}

#glacier {
  polygon-fill:#fff;
  polygon-opacity:0.5;
}

/* Useful/significant lines */
#geo-lines[ScaleRank<10] {
  line-color:@line;
  line-dasharray:6,2;
  [zoom=0] { line-width:0.2; }
  [zoom=1] { line-width:0.4; }
  [zoom=2] { line-width:0.6; }
  [zoom=3] { line-width:0.8; }
  [zoom>3] { line-width:1; }
}

.border.country[zoom>1],
.border.disputed[zoom>2] {
  line-width:1;
  line-color:#fff;
  line-join:round;
  .country[FeatureCla='Disputed (please verify)'] {
    [zoom=3] { line-dasharray:4,1; }
    [zoom=4] { line-dasharray:5,2; }
    [zoom=5] { line-dasharray:6,2; }
    [zoom=6] { line-dasharray:8,3; }
    [zoom>6] { line-dasharray:10,3; }
  }
  .disputed[FeatureCla='Breakaway'] {
    [zoom=3] { line-dasharray: 3,2; }
    [zoom=4] { line-dasharray: 4,4; }
    [zoom=5] { line-dasharray: 5,5; }
    [zoom=6] { line-dasharray: 6,6; }
    [zoom>6] { line-dasharray: 8,8; }
  }
  .disputed[FeatureCla='Claim boundary'] {
    line-dasharray: 1,3;
    [zoom>6] { line-dasharray: 2,4; }
  }
  .country[FeatureCla='Indefinite (please verify)'] {
    line-dasharray: 6,1;
  }
}

#state[ADM0_A3="USA"],
#state[ADM0_A3="CAN"],
#state[ADM0_A3="AUS"] {
  [zoom>3] {
    line-color:@line;
    line-opacity:0.25;
    line-width:1.2;
    line-dasharray:6,2,2,2;
  }
}

/* Transparent PNG overlay for paper texture */
#paper[zoom<2] {
  polygon-pattern-file:url(textures/paperfolds_256.png);
}
#paper[zoom>1] {
  polygon-pattern-file:url(textures/paperfolds_512.png);
}


minor text fixes

minor text fixes

/* ==================================================================
   ROAD & RAIL LINES
/* ================================================================== */

/* At lower zoomlevels, just show major automobile routes: motorways
and trunks. */

#roads_low[zoom>=5][zoom<=8] {
  [type='motorway'] { line-color: #e4c049; }
  [type='trunk'] { line-color: #e4c049; }
  [zoom=5] {
    [type='motorway'] { line-width: 0.8; }
    [type='trunk'] { line-width: 0.4; } }
  [zoom=6] {
    [type='motorway'] { line-width: 1.0; }
    [type='trunk'] { line-width: 0.5; } }
  [zoom=7] {
    [type='motorway'] { line-width: 1.2; }
    [type='trunk'] { line-width: 0.6; } }
  [zoom=8] {
    [type='motorway'] { line-width: 2; }
    [type='trunk'] { line-width: 1.0; } }
}

/* At mid-level scales start to show primary and secondary routes
as well. */

#roads_med[zoom>=9][zoom<=10] {
  [type='motorway'],
  [type='motorway_link'] {
    line-color: #e4c049;
  }

  [type='trunk'],
  [type='trunk_link'] {
    line-color: @trunk_line;
  }

  [zoom=9] {
    [type='motorway'],[type='trunk'] { line-width: 2.4; }
    /*
    [type='primary'],[type='secondary'],
    [type='motorway_link'],[type='trunk_link'] { line-width: 0.6; }
    */
  }
  [zoom=10] {
    [type='motorway'],[type='trunk'] { line-width: 2.8; }
    [type='primary'],[type='motorway_link'],[type='trunk_link'] { line-width: 0.8; }
    [type='primary'] { line-color: @primary_line; }
  }
}

/* At higher levels the roads become more complex. We're now showing
more than just automobile routes - railways, footways, and cycleways
come in as well.

/* Road width variables that are used in road & bridge styles */
@rdz11_maj: 1.6; @rdz11_med: 0.8; @rdz11_min: 0.4;
@rdz12_maj: 2.5; @rdz12_med: 1.2; @rdz12_min: 0.8;
@rdz13_maj: 3;   @rdz13_med: 1.5; @rdz13_min: 1;
@rdz14_maj: 4;   @rdz14_med: 2.5; @rdz14_min: 1.6;
@rdz15_maj: 6;   @rdz15_med: 4;   @rdz15_min: 2;
@rdz16_maj: 8;   @rdz16_med: 6;   @rdz16_min: 4;
@rdz17_maj: 14;  @rdz17_med: 12;  @rdz17_min: 10;
@rdz18_maj: 20;  @rdz18_med: 17;  @rdz18_min: 14;

/* ---- Casing ----------------------------------------------- */

#roads_high::outline[zoom>=11][zoom<=20],
#tunnel[render='1_outline'][zoom>=11][zoom<=20],
#bridge[render='1_outline'][zoom>=11][zoom<=20]{
  /* -- colors & styles -- */
  line-cap: round;
  [bridge=1],
  [tunnel=1] {
    line-cap: butt;
  }
  line-join: round;
  line-color: @standard_case;
  [bridge=1] { line-color: @standard_case * 0.8; }
  [type='motorway'],
  [type='motorway_link'] {
    line-color: @motorway_case;
    [bridge=1] { line-color: @motorway_case * 0.8; }
  }
  [type='trunk'],
  [type='trunk_link'] {
    line-color: @trunk_case;
    [bridge=1] { line-color: @trunk_case * 0.8; }
  }
  [type='primary'],
  [type='primary_link'] {
    line-color: @primary_case;
    [bridge=1] { line-color: @primary_case * 0.8; }
  }
  [type='secondary'],
  [type='secondary_link'] {
    line-color: @secondary_case;
    [bridge=1] { line-color: @secondary_case * 0.8; }
  }
  [stylegroup='railway'] {
    line-color: fadeout(@land,50%);
    [bridge=1] { line-color: @secondary_case * 0.8; }
  }
  [tunnel=1] { line-dasharray: 3,3; }
  /* -- widths -- */
  [zoom=11] {
    [stylegroup='motorway'] { line-width: @rdz11_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz11_med + 1.6; }
    [stylegroup='minorroad']{ line-width: @rdz11_min; }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=12] {
    [stylegroup='motorway'] { line-width: @rdz12_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz12_med + 2; }
    [stylegroup='minorroad']{ line-width: 0 }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=13] {
    [stylegroup='motorway'] { line-width: @rdz13_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz13_med + 2; }
    [stylegroup='minorroad']{ line-width: 0; }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=14] {
    [stylegroup='motorway'] { line-width: @rdz14_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz14_med + 2; }
    [stylegroup='minorroad']{ line-width: @rdz14_min + 2; }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=15] {
    [stylegroup='motorway'] { line-width: @rdz15_maj + 2.5; }
    [stylegroup='mainroad'] { line-width: @rdz15_med + 2; }
    [stylegroup='minorroad']{ line-width: @rdz15_min + 2; }
    [stylegroup='service']  { line-width: @rdz15_min / 3 + 2; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 1.5 + 2; }
  }
  [zoom=16] {
    [stylegroup='motorway'] { line-width: @rdz16_maj + 2.5; }
    [stylegroup='mainroad'] { line-width: @rdz16_med + 2.5; }
    [stylegroup='minorroad']{ line-width: @rdz16_min + 2; }
    [stylegroup='service']  { line-width: @rdz16_min / 3 + 2; }
    [stylegroup='noauto']   { line-width: 0 }
    [stylegroup='railway']  { line-width: 2 + 2; }
  }
  [zoom>=17] {
    [stylegroup='motorway'] { line-width: @rdz17_maj + 3; }
    [stylegroup='mainroad'] { line-width: @rdz17_med + 2.5; }
    [stylegroup='minorroad']{ line-width: @rdz17_min + 2; }
    [stylegroup='service']  { line-width: @rdz17_min / 3 + 2; }
    [stylegroup='noauto']   { line-width: @rdz17_min / 4 + 4; }
    [stylegroup='railway']  { line-width: 3 + 4; } // 3 + 4
  }
  [zoom>=18] {
    [stylegroup='motorway'] { line-width: @rdz18_maj + 4; }
    [stylegroup='mainroad'] { line-width: @rdz18_med + 4; }
    [stylegroup='minorroad']{ line-width: @rdz18_min + 3.5; }
    [stylegroup='service']  { line-width: @rdz18_min / 3 + 3.5; }
    [stylegroup='noauto']   { line-width: @rdz18_min / 4 + 6; }
    [stylegroup='railway']  { line-width: 4 + 6; }
  }
}

#roads_high[zoom>=11][zoom<=20],
#tunnel[render='3_inline'][zoom>=11][zoom<=20],
#bridge[render='3_inline'][zoom>=11][zoom<=20]{
  /* -- colors & styles -- */
  line-color: @standard_fill;
  [type='motorway'],
  [type='motorway_link'] {
    line-color: @motorway_fill;
    [tunnel=1] { line-color: lighten(@motorway_fill, 10%); }
  }
  [type='trunk'],
  [type='trunk_link'] {
    line-color: @trunk_fill;
    [tunnel=1] { line-color: lighten(@trunk_fill, 10%); }
  }
  [type='primary'],
  [type='primary_link'] {
    line-color: @primary_fill;
    [tunnel=1] { line-color: lighten(@primary_fill, 10%); }
  }
  [type='secondary'],
  [type='secondary_link'] {
    line-color: @secondary_fill;
    [tunnel=1] { line-color: lighten(@secondary_fill, 10%); }
  }
  [stylegroup='railway'] {
    line-color: @rail_line;
    line-dasharray: 1,1;
    [type='subway'] { line-opacity: 0.67; }
    [zoom>15] { line-dasharray: 1,2; }
  }
  [stylegroup='noauto'],
  [stylegroup='service'],
  [stylegroup='minorroad'] {
    line-width: 0;
  }
  [stylegroup='service'],
  [stylegroup='minorroad'],
  [stylegroup='mainroad'],
  [stylegroup='motorway'] {
    line-cap: round;
    line-join: round;
  }
  [stylegroup='noauto'] {
    line-join: round;
  }
  [tunnel=1] {
    line-cap: butt;
  }
  /* -- widths -- */
  [zoom=11] {
    [stylegroup='motorway'] { line-width: @rdz11_maj; line-color: #e4c049; }
    [stylegroup='mainroad'] { line-width: @rdz11_med; }
    [stylegroup='minorroad']{ line-width: 0; }
    [stylegroup='railway']  { line-width: 0.2; }
  }
  [zoom=12] {
    [stylegroup='motorway'] { line-width: @rdz12_maj; }
    [stylegroup='mainroad'] { line-width: @rdz12_med; }
    [stylegroup='minorroad']{ line-width: 0; }
    [stylegroup='railway']  { line-width: 0.4; }
  }
  [zoom=13] {
    [stylegroup='motorway'] { line-width: @rdz13_maj; }
    [stylegroup='mainroad'] { line-width: @rdz13_med; }
    [stylegroup='minorroad']{ line-width: @rdz13_min; }
    [stylegroup='service']  { line-width: @rdz13_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz13_min / 4; line-dasharray: 1,1; }
    [stylegroup='railway']  { line-width: 0.8; }
  }
  [zoom=14] {
    [stylegroup='motorway'] { line-width: @rdz14_maj; }
    [stylegroup='mainroad'] { line-width: @rdz14_med; }
    [stylegroup='minorroad']{ line-width: @rdz14_min; }
    [stylegroup='service']  { line-width: @rdz14_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz14_min / 4; line-dasharray: 1,1; }
    [stylegroup='railway']  { line-width: 1; }
  }
  [zoom=15] {
    [stylegroup='motorway'] { line-width: @rdz15_maj; }
    [stylegroup='mainroad'] { line-width: @rdz15_med; }
    [stylegroup='minorroad']{ line-width: @rdz15_min; }
    [stylegroup='service']  { line-width: @rdz15_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz15_min / 4; line-dasharray: 1,1; }
    [stylegroup='railway']  { line-width: 1.5; }
  }
  [zoom=16] {
    [stylegroup='motorway'] { line-width: @rdz16_maj; }
    [stylegroup='mainroad'] { line-width: @rdz16_med; }
    [stylegroup='minorroad']{ line-width: @rdz16_min; }
    [stylegroup='service']  { line-width: @rdz16_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz16_min / 4; line-dasharray: 2,1; }
    [stylegroup='railway']  { line-width: 2; }
  }
  [zoom=17] {
    [stylegroup='motorway'] { line-width: @rdz17_maj; }
    [stylegroup='mainroad'] { line-width: @rdz17_med; }
    [stylegroup='minorroad']{ line-width: @rdz17_min; }
    [stylegroup='service']  { line-width: @rdz17_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz17_min / 4; line-dasharray: 2,2; }
    [stylegroup='railway']  { line-width: 3; }
  }
  [zoom>=18] {
    [stylegroup='motorway'] { line-width: @rdz18_maj; }
    [stylegroup='mainroad'] { line-width: @rdz18_med; }
    [stylegroup='minorroad']{ line-width: @rdz18_min; }
    [stylegroup='service']  { line-width: @rdz18_min / 2; }
    [stylegroup='noauto']   { line-width: @rdz18_min / 4; line-dasharray: 3,3; }
    [stylegroup='railway']  { line-width: 4; }
  }
}

/* ---- Bridge fill for dashed lines -------------------------------- */
#tunnel[render='2_line'][zoom>=14][zoom<=20],
#bridge[render='2_line'][zoom>=14][zoom<=20]{
  /* -- colors & styles -- */
  [stylegroup='noauto'] {
    line-color: @land;
    line-width: 0;
    line-join: round;
  }
  [stylegroup='railway'] {
    line-color: @land;
    line-join: round;
  }
  /* -- widths -- */
  [zoom=14] {
    [stylegroup='noauto']   { line-width: @rdz14_min / 4 + 1; }
    [stylegroup='railway']  { line-width: 1 + 1; }
  }
  [zoom=15] {
    [stylegroup='noauto']   { line-width: @rdz15_min / 4 + 1; }
    [stylegroup='railway']  { line-width: 1.5 + 1; }
  }
  [zoom=16] {
    [stylegroup='noauto']   { line-width: @rdz16_min / 4 + 1; }
    [stylegroup='railway']  { line-width: 2 + 1; }
  }
  [zoom=17] {
    [stylegroup='noauto']   { line-width: @rdz17_min / 4 + 3; }
    [stylegroup='railway']  { line-width: 3 + 2; }
  }
  [zoom>=18] {
    [stylegroup='noauto']   { line-width: @rdz18_min / 4 + 3; }
    [stylegroup='railway']  { line-width: 4 + 3; }
  }
}

/* ---- Turning Circles --------------------------------------------- */
#turning_circle_case[zoom>=14] {
  marker-fill:@standard_fill;
  marker-line-color:@standard_case;
  marker-line-width:2;
  marker-allow-overlap:true;
}
#turning_circle_fill[zoom>=14] {
  marker-fill:@standard_fill;
  marker-line-width:0;
  marker-line-opacity:0;
  marker-allow-overlap:true;
}
#turning_circle_case,
#turning_circle_fill {
  [zoom=14] { marker-width:@rdz14_min * 1.1; }
  [zoom=15] { marker-width:@rdz15_min * 1.1; }
  [zoom=16] { marker-width:@rdz16_min * 1.1; }
  [zoom=17] { marker-width:@rdz17_min * 1.1; }
  [zoom>=18] { marker-width:@rdz18_min * 1.1; }
}

/* ================================================================== */
/* AEROWAYS
/* ================================================================== */

#aeroway[zoom>9] {
  line-color:@aeroway;
  line-cap:butt;
  line-join:miter;
  [type='runway'] {
    [zoom=10]{ line-width:1; }
    [zoom=11]{ line-width:2; }
    [zoom=12]{ line-width:3; }
    [zoom=13]{ line-width:5; }
    [zoom=14]{ line-width:7; }
    [zoom=15]{ line-width:11; }
    [zoom=16]{ line-width:15; }
    [zoom=17]{ line-width:19; }
    [zoom>17]{ line-width:23; }
  }
  [type='taxiway'] {
    [zoom=10]{ line-width:0.2; }
    [zoom=11]{ line-width:0.2; }
    [zoom=12]{ line-width:0.2; }
    [zoom=13]{ line-width:1; }
    [zoom=14]{ line-width:1.5; }
    [zoom=15]{ line-width:2; }
    [zoom=16]{ line-width:3; }
    [zoom=17]{ line-width:4; }
    [zoom>17]{ line-width:5; }
  }
}

/******************************************************************* */

/* ==================================================================
   ROAD & RAIL LINES
/* ================================================================== */

/* At lower zoomlevels, just show major automobile routes: motorways
and trunks. */

#roads_low[zoom>=5][zoom<=8] {
  [type='motorway'] { line-color: #e4c049; }
  [type='trunk'] { line-color: @trunk_line; }
  [zoom=5] {
    [type='motorway'] { line-width: 0.8; }
    [type='trunk'] { line-width: 0.2; } }
  [zoom=6] {
    [type='motorway'] { line-width: 1.0; }
    [type='trunk'] { line-width: 0.25; } }
  [zoom=7] {
    [type='motorway'] { line-width: 1.2; }
    [type='trunk'] { line-width: 0.3; } }
  [zoom=8] {
    [type='motorway'] { line-width: 2; }
    [type='trunk'] { line-width: 0.5; } }
}

/* At mid-level scales start to show primary and secondary routes
as well. */

#roads_med[zoom>=9][zoom<=10] {
  [type='motorway'],
  [type='motorway_link'] {
    line-color: #e4c049;
  }

  [type='trunk'],
  [type='trunk_link'] {
    line-color: @trunk_line;
  }

  [zoom=9] {
    [type='motorway'],[type='trunk'] { line-width: 2.4; }
    /*
    [type='primary'],[type='secondary'],
    [type='motorway_link'],[type='trunk_link'] { line-width: 0.6; }
    */
  }
  [zoom=10] {
    [type='motorway'],[type='trunk'] { line-width: 2.8; }
    [type='primary'],[type='motorway_link'],[type='trunk_link'] { line-width: 0.8; }
    [type='primary'] { line-color: @primary_line; }
  }
}

/* At higher levels the roads become more complex. We're now showing
more than just automobile routes - railways, footways, and cycleways
come in as well.

/* Road width variables that are used in road & bridge styles */
@rdz11_maj: 1.6; @rdz11_med: 0.8; @rdz11_min: 0.4;
@rdz12_maj: 2.5; @rdz12_med: 1.2; @rdz12_min: 0.8;
@rdz13_maj: 3;   @rdz13_med: 1.5; @rdz13_min: 1;
@rdz14_maj: 4;   @rdz14_med: 2.5; @rdz14_min: 1.6;
@rdz15_maj: 6;   @rdz15_med: 4;   @rdz15_min: 2;
@rdz16_maj: 8;   @rdz16_med: 6;   @rdz16_min: 4;
@rdz17_maj: 14;  @rdz17_med: 12;  @rdz17_min: 10;
@rdz18_maj: 20;  @rdz18_med: 17;  @rdz18_min: 14;

/* ---- Casing ----------------------------------------------- */

#roads_high::outline[zoom>=11][zoom<=20],
#tunnel[render='1_outline'][zoom>=11][zoom<=20],
#bridge[render='1_outline'][zoom>=11][zoom<=20]{
  /* -- colors & styles -- */
  line-cap: round;
  [bridge=1],
  [tunnel=1] {
    line-cap: butt;
  }
  line-join: round;
  line-color: @standard_case;
  [bridge=1] { line-color: @standard_case * 0.8; }
  [type='motorway'],
  [type='motorway_link'] {
    line-color: @motorway_case;
    [bridge=1] { line-color: @motorway_case * 0.8; }
  }
  [type='trunk'],
  [type='trunk_link'] {
    line-color: @trunk_case;
    [bridge=1] { line-color: @trunk_case * 0.8; }
  }
  [type='primary'],
  [type='primary_link'] {
    line-color: @primary_case;
    [bridge=1] { line-color: @primary_case * 0.8; }
  }
  [type='secondary'],
  [type='secondary_link'] {
    line-color: @secondary_case;
    [bridge=1] { line-color: @secondary_case * 0.8; }
  }
  [stylegroup='railway'] {
    line-color: fadeout(@land,50%);
    [bridge=1] { line-color: @secondary_case * 0.8; }
  }
  [tunnel=1] { line-dasharray: 3,3; }
  /* -- widths -- */
  [zoom=11] {
    [stylegroup='motorway'] { line-width: @rdz11_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz11_med + 1.6; }
    [stylegroup='minorroad']{ line-width: @rdz11_min; }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=12] {
    [stylegroup='motorway'] { line-width: @rdz12_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz12_med + 2; }
    [stylegroup='minorroad']{ line-width: 0 }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=13] {
    [stylegroup='motorway'] { line-width: @rdz13_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz13_med + 2; }
    [stylegroup='minorroad']{ line-width: 0; }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=14] {
    [stylegroup='motorway'] { line-width: @rdz14_maj + 2; }
    [stylegroup='mainroad'] { line-width: @rdz14_med + 2; }
    [stylegroup='minorroad']{ line-width: @rdz14_min + 2; }
    /* No minor bridges yet */
    [stylegroup='service']  { line-width: 0; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 0; }
  }
  [zoom=15] {
    [stylegroup='motorway'] { line-width: @rdz15_maj + 2.5; }
    [stylegroup='mainroad'] { line-width: @rdz15_med + 2; }
    [stylegroup='minorroad']{ line-width: @rdz15_min + 2; }
    [stylegroup='service']  { line-width: @rdz15_min / 3 + 2; }
    [stylegroup='noauto']   { line-width: 0; }
    [stylegroup='railway']  { line-width: 1.5 + 2; }
  }
  [zoom=16] {
    [stylegroup='motorway'] { line-width: @rdz16_maj + 2.5; }
    [stylegroup='mainroad'] { line-width: @rdz16_med + 2.5; }
    [stylegroup='minorroad']{ line-width: @rdz16_min + 2; }
    [stylegroup='service']  { line-width: @rdz16_min / 3 + 2; }
    [stylegroup='noauto']   { line-width: 0 }
    [stylegroup='railway']  { line-width: 2 + 2; }
  }
  [zoom>=17] {
    [stylegroup='motorway'] { line-width: @rdz17_maj + 3; }
    [stylegroup='mainroad'] { line-width: @rdz17_med + 2.5; }
    [stylegroup='minorroad']{ line-width: @rdz17_min + 2; }
    [stylegroup='service']  { line-width: @rdz17_min / 3 + 2; }
    [stylegroup='noauto']   { line-width: @rdz17_min / 4 + 4; }
    [stylegroup='railway']  { line-width: 3 + 4; } // 3 + 4
  }
  [zoom>=18] {
    [stylegroup='motorway'] { line-width: @rdz18_maj + 4; }
    [stylegroup='mainroad'] { line-width: @rdz18_med + 4; }
    [stylegroup='minorroad']{ line-width: @rdz18_min + 3.5; }
    [stylegroup='service']  { line-width: @rdz18_min / 3 + 3.5; }
    [stylegroup='noauto']   { line-width: @rdz18_min / 4 + 6; }
    [stylegroup='railway']  { line-width: 4 + 6; }
  }
}

#roads_high[zoom>=11][zoom<=20],
#tunnel[render='3_inline'][zoom>=11][zoom<=20],
#bridge[render='3_inline'][zoom>=11][zoom<=20]{
  /* -- colors & styles -- */
  line-color: @standard_fill;
  [type='motorway'],
  [type='motorway_link'] {
    line-color: @motorway_fill;
    [tunnel=1] { line-color: lighten(@motorway_fill, 10%); }
  }
  [type='trunk'],
  [type='trunk_link'] {
    line-color: @trunk_fill;
    [tunnel=1] { line-color: lighten(@trunk_fill, 10%); }
  }
  [type='primary'],
  [type='primary_link'] {
    line-color: @primary_fill;
    [tunnel=1] { line-color: lighten(@primary_fill, 10%); }
  }
  [type='secondary'],
  [type='secondary_link'] {
    line-color: @secondary_fill;
    [tunnel=1] { line-color: lighten(@secondary_fill, 10%); }
  }
  [stylegroup='railway'] {
    line-color: @rail_line;
    line-dasharray: 1,1;
    [type='subway'] { line-opacity: 0.67; }
    [zoom>15] { line-dasharray: 1,2; }
  }
  [stylegroup='noauto'],
  [stylegroup='service'],
  [stylegroup='minorroad'] {
    line-width: 0;
  }
  [stylegroup='service'],
  [stylegroup='minorroad'],
  [stylegroup='mainroad'],
  [stylegroup='motorway'] {
    line-cap: round;
    line-join: round;
  }
  [stylegroup='noauto'] {
    line-join: round;
  }
  [tunnel=1] {
    line-cap: butt;
  }
  /* -- widths -- */
  [zoom=11] {
    [stylegroup='motorway'] { line-width: @rdz11_maj; line-color: #e4c049; }
    [stylegroup='mainroad'] { line-width: @rdz11_med; }
    [stylegroup='minorroad']{ line-width: 0; }
    [stylegroup='railway']  { line-width: 0.2; }
  }
  [zoom=12] {
    [stylegroup='motorway'] { line-width: @rdz12_maj; }
    [stylegroup='mainroad'] { line-width: @rdz12_med; }
    [stylegroup='minorroad']{ line-width: 0; }
    [stylegroup='railway']  { line-width: 0.4; }
  }
  [zoom=13] {
    [stylegroup='motorway'] { line-width: @rdz13_maj; }
    [stylegroup='mainroad'] { line-width: @rdz13_med; }
    [stylegroup='minorroad']{ line-width: @rdz13_min; }
    [stylegroup='service']  { line-width: @rdz13_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz13_min / 4; line-dasharray: 1,1; }
    [stylegroup='railway']  { line-width: 0.8; }
  }
  [zoom=14] {
    [stylegroup='motorway'] { line-width: @rdz14_maj; }
    [stylegroup='mainroad'] { line-width: @rdz14_med; }
    [stylegroup='minorroad']{ line-width: @rdz14_min; }
    [stylegroup='service']  { line-width: @rdz14_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz14_min / 4; line-dasharray: 1,1; }
    [stylegroup='railway']  { line-width: 1; }
  }
  [zoom=15] {
    [stylegroup='motorway'] { line-width: @rdz15_maj; }
    [stylegroup='mainroad'] { line-width: @rdz15_med; }
    [stylegroup='minorroad']{ line-width: @rdz15_min; }
    [stylegroup='service']  { line-width: @rdz15_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz15_min / 4; line-dasharray: 1,1; }
    [stylegroup='railway']  { line-width: 1.5; }
  }
  [zoom=16] {
    [stylegroup='motorway'] { line-width: @rdz16_maj; }
    [stylegroup='mainroad'] { line-width: @rdz16_med; }
    [stylegroup='minorroad']{ line-width: @rdz16_min; }
    [stylegroup='service']  { line-width: @rdz16_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz16_min / 4; line-dasharray: 2,1; }
    [stylegroup='railway']  { line-width: 2; }
  }
  [zoom=17] {
    [stylegroup='motorway'] { line-width: @rdz17_maj; }
    [stylegroup='mainroad'] { line-width: @rdz17_med; }
    [stylegroup='minorroad']{ line-width: @rdz17_min; }
    [stylegroup='service']  { line-width: @rdz17_min / 3; }
    [stylegroup='noauto']   { line-width: @rdz17_min / 4; line-dasharray: 2,2; }
    [stylegroup='railway']  { line-width: 3; }
  }
  [zoom>=18] {
    [stylegroup='motorway'] { line-width: @rdz18_maj; }
    [stylegroup='mainroad'] { line-width: @rdz18_med; }
    [stylegroup='minorroad']{ line-width: @rdz18_min; }
    [stylegroup='service']  { line-width: @rdz18_min / 2; }
    [stylegroup='noauto']   { line-width: @rdz18_min / 4; line-dasharray: 3,3; }
    [stylegroup='railway']  { line-width: 4; }
  }
}

/* ---- Bridge fill for dashed lines -------------------------------- */
#tunnel[render='2_line'][zoom>=14][zoom<=20],
#bridge[render='2_line'][zoom>=14][zoom<=20]{
  /* -- colors & styles -- */
  [stylegroup='noauto'] {
    line-color: @land;
    line-width: 0;
    line-join: round;
  }
  [stylegroup='railway'] {
    line-color: @land;
    line-join: round;
  }
  /* -- widths -- */
  [zoom=14] {
    [stylegroup='noauto']   { line-width: @rdz14_min / 4 + 1; }
    [stylegroup='railway']  { line-width: 1 + 1; }
  }
  [zoom=15] {
    [stylegroup='noauto']   { line-width: @rdz15_min / 4 + 1; }
    [stylegroup='railway']  { line-width: 1.5 + 1; }
  }
  [zoom=16] {
    [stylegroup='noauto']   { line-width: @rdz16_min / 4 + 1; }
    [stylegroup='railway']  { line-width: 2 + 1; }
  }
  [zoom=17] {
    [stylegroup='noauto']   { line-width: @rdz17_min / 4 + 3; }
    [stylegroup='railway']  { line-width: 3 + 2; }
  }
  [zoom>=18] {
    [stylegroup='noauto']   { line-width: @rdz18_min / 4 + 3; }
    [stylegroup='railway']  { line-width: 4 + 3; }
  }
}

/* ---- Turning Circles --------------------------------------------- */
#turning_circle_case[zoom>=14] {
  marker-fill:@standard_fill;
  marker-line-color:@standard_case;
  marker-line-width:2;
  marker-allow-overlap:true;
}
#turning_circle_fill[zoom>=14] {
  marker-fill:@standard_fill;
  marker-line-width:0;
  marker-line-opacity:0;
  marker-allow-overlap:true;
}
#turning_circle_case,
#turning_circle_fill {
  [zoom=14] { marker-width:@rdz14_min * 1.1; }
  [zoom=15] { marker-width:@rdz15_min * 1.1; }
  [zoom=16] { marker-width:@rdz16_min * 1.1; }
  [zoom=17] { marker-width:@rdz17_min * 1.1; }
  [zoom>=18] { marker-width:@rdz18_min * 1.1; }
}

/* ================================================================== */
/* AEROWAYS
/* ================================================================== */

#aeroway[zoom>9] {
  line-color:@aeroway;
  line-cap:butt;
  line-join:miter;
  [type='runway'] {
    [zoom=10]{ line-width:1; }
    [zoom=11]{ line-width:2; }
    [zoom=12]{ line-width:3; }
    [zoom=13]{ line-width:5; }
    [zoom=14]{ line-width:7; }
    [zoom=15]{ line-width:11; }
    [zoom=16]{ line-width:15; }
    [zoom=17]{ line-width:19; }
    [zoom>17]{ line-width:23; }
  }
  [type='taxiway'] {
    [zoom=10]{ line-width:0.2; }
    [zoom=11]{ line-width:0.2; }
    [zoom=12]{ line-width:0.2; }
    [zoom=13]{ line-width:1; }
    [zoom=14]{ line-width:1.5; }
    [zoom=15]{ line-width:2; }
    [zoom=16]{ line-width:3; }
    [zoom=17]{ line-width:4; }
    [zoom>17]{ line-width:5; }
  }
}

/******************************************************************* */