gravitystorm/openstreetmap-carto — pull request #302 by cquest (2014-01-01 17:28:04+00:00)
Title: Do not render type=route relations

When a type=route relation with matching tags exists (like railway=* or highway=*) the rendering takes place twice. This may cause tunnels to be re-rendered as non tunnels.
I've fixed it with success in OSM-FR tiles.