Mapbox Streets GL: refining roads

[nickidlugash]

Summary of current road styling:

	1 (widest)	2	3	4	5	Hairline
ORANGE	Motorway	-	Motorway_link	-
YELLOW	Trunk	-	-	-
WHITE	-	Main	Street	Service / driveway	Path (dotted)
LT GREY	-	-	Street_limited	-
DK GREY	-	-	-	-	-	Major_rail / minor_rail (with tracks), Aerialway

Bridges: Same as roads, but with butt caps for the casings.

Tunnels: For orange and yellow roads, these are are a lighter shade/lower saturation. For white roads and light grey roads, these are the color of the casing.

Still to add/consider:

• Tunnels: These need some refining. My strong preference is for these to be a lowered opacity, rather than a lighter color, but that requires per-layer opacity to be implemented.
• Rails: Currently rail bridges and tunnels are styled the same as roads. In the past I've often differentiated between these, but I wonder if that's necessary? Whether a train goes across tracks on a bridge or in a tunnel doesn't really affect train passengers or most people looking at the map.
• Service and Driveway classes: Currently service and driveway are one layer. Should they be two (with driveway thinner?). Should we not style driveways at all? The reason to collapse them into one style was to reduce # of layers, since driveways are very minor features and maybe not worthy of their own layer.
• Paths: All paths are one layer, and optimized for cities. Again, this is to reduce # of layers. Should we pull out some path types? Ski slopes? Steps? Footways? I'm leaning towards no.

[nickidlugash]

@samanpwbb I just pushed a stylesheet with updated styling for mid-zoom streets. Main road casings also come in later now. Let me know what you think.

[1ec5]

The white outline around the highway shields is a little too thick. When it bleeds into nearby minor road fills (see “9A” center-left), the outline can almost look like a continuation of the road. Is that white outline even necessary? On dark backgrounds the white will stand out; on light backgrounds the black outline will make the shape discernible.

[nickidlugash]

@1ec5 – Thanks for the feedback! @samanpwbb is already removing these. Also, we do have a ticket for everything sprite-related if you have more feedback.

[nickidlugash]

More specific issues captured in other tickets now.