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There is an unknown black line in the center of about 80% streets. I have been adjusting line-widths and switching off and on every line layer for hours to no avail.

I am using the latest version of TileMill with the latest openstreetmap-carto style and postgresql. I posted an image below for an example of the black lines that are in the center of the roads. The export looks terrible with these black lines present. I searched for a "road-centerline" style but there were none present that I could find.

example


I narrowed it down to the layer it is on, #roads-text-name. I'm having an issue though trying to figure out which styling is causing the black lines.

    roads-text-name {
  [highway = 'motorway'],
  [highway = 'trunk'],
  [highway = 'primary'] {
    [zoom >= 13] {
      text-name: "[name]";
      text-size: 8;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-face-name: @book-fonts;
      [tunnel = 'no'] {
        text-halo-radius: 1;
        [highway = 'motorway'] { text-halo-fill: @motorway-fill; }
        [highway = 'trunk'] { text-halo-fill: @trunk-fill; }
        [highway = 'primary'] { text-halo-fill: @primary-fill; }
      }
    }
    [zoom >= 14] {
      text-size: 9;
    }
    [zoom >= 15] {
      text-size: 10;
    }
    [zoom >= 17] {
      text-size: 11;
    }
  }
  [highway = 'secondary'] {
    [zoom >= 13] {
      text-name: "[name]";
      text-size: 8;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-face-name: @book-fonts;
      text-halo-radius: 1;
      text-halo-fill: @secondary-fill; 
    }
    [zoom >= 14] {
      text-size: 9;
    }
    [zoom >= 15] {
      text-size: 10;
    }
    [zoom >= 17] {
      text-size: 11;
    }
  }
  [highway = 'tertiary'],
  [highway = 'tertiary_link'] {
    [zoom >= 14] {
      text-name: "[name]";
      text-size: 9;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-face-name: @book-fonts;
      text-halo-radius: 1;
      text-halo-fill: @tertiary-fill;
    }
    [zoom >= 17] {
      text-size: 11;
    }
  }
  [highway = 'proposed'] {
    [zoom >= 15] {
      text-name: "[name]";
      text-size: 9;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-halo-radius: 1;
      text-halo-fill: rgba(255,255,255,0.6);
      text-face-name: @book-fonts;
      text-opacity: 0.3;
    }
    [zoom >= 17] {
      text-size: 11;
    }
  }
  [highway = 'construction'] {
    [int_construction_minor = 'no'][zoom >= 13],
    [int_construction_minor = 'yes'][zoom >= 14] {
      text-name: "[name]";
      text-size: 9;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-halo-radius: 1;
      text-halo-fill: rgba(255,255,255,0.6);
      text-face-name: @book-fonts;
      [zoom >= 17] {
        text-size: 11;
      }
    }
  }
  [highway = 'residential'],
  [highway = 'unclassified'],
  [highway = 'road'] {
    [zoom >= 15] {
      text-name: "[name]";
      text-size: 8;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-halo-radius: 1;
      text-halo-fill: @residential-fill;
      text-face-name: @book-fonts;
    }
    [zoom >= 16] {
      text-size: 9;
    }
    [zoom >= 17] {
      text-size: 11;
      text-spacing: 400;
    }
  }

  [highway = 'raceway'],
  [highway = 'service'] {
    [zoom >= 16] {
      text-name: "[name]";
      text-size: 9;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-halo-radius: 1;
      [highway = 'raceway'] { text-halo-fill: @raceway-fill; }
      [highway = 'service'] { text-halo-fill: @service-fill; }
      text-face-name: @book-fonts;
    }
    [zoom >= 17] {
      text-size: 11;
    }
  }

  [highway = 'living_street'],
  [highway = 'pedestrian'] {
    [zoom >= 15] {
      text-name: "[name]";
      text-size: 8;
      text-fill: black;
      text-spacing: 300;
      text-clip: false;
      text-placement: line;
      text-halo-radius: 1;
      [highway = 'living_street'] { text-halo-fill: @living-street-fill; }
      [highway = 'pedestrian'] { text-halo-fill: @pedestrian-fill; }
      text-face-name: @book-fonts;
    }
    [zoom >= 16] {
      text-size: 9;
    }
    [zoom >= 17] {
      text-size: 11;
    }
  }
}
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  • It seems to start at Zoom level 13
    – GravitaZ
    Sep 15, 2015 at 19:36
  • How does the tagging differ between streets having a black line and streets that don't?
    – scai
    Sep 16, 2015 at 8:09
  • That is what I'm trying to figure out, hah. I can't figure out what layer the black lines are
    – GravitaZ
    Sep 17, 2015 at 3:13
  • Then please tell us the area from your screenshot, ideally with a link to openstreetmap.org. Then it is very easy to take a look at the corresponding tags.
    – scai
    Sep 17, 2015 at 6:44
  • 1
    Here is the link to the area of the screenshot openstreetmap.org/#map=15/38.3396/-79.1266
    – GravitaZ
    Sep 18, 2015 at 3:30

2 Answers 2

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You might find posting on the OpenStreetMap Carto issue tracker helpful. Most of the developers have moved from Tilemill to Kosmtik, but both should work fine with the style, and because both use Mapnik and carto, both should reproduce the same bugs.

If turning off the roads-text-name layer fixes it, that is odd.

I would first update to the latest OpenStreetMap Carto version, as the roads styling has been significantly changed. It's also worth double-checking that turning off the layer is the only change that you did, because I see nothing in the code you posted or the current code that would cause carto to generate a linesymbolizer, which is what would draw a line like that.

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  • Thanks! Sorry for the late response, I kind of got sidetracked from this project. Is there a version of Kosmtik that would work with windows?
    – GravitaZ
    Nov 2, 2015 at 19:28
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Without seeing all the mss, it's difficult to tell. But how about looking at this from a different angle? Rather than black lines, do you think the roads have thick yellow casing? Are there casing rules for these types of roads? See "Compound line styles" on https://www.mapbox.com/tilemill/docs/guides/styling-lines/

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