Objective: Map missing turn lanes from satellite imagery to estimate mapping effort

Team: @planemad w/ @mapbox/india-office @lxbarth @Rub21 @Andygol @mikelmaron

Map Features:
Focus Area: Redwood City - Palo Alto 300 sq.km

Estimated features to map: unknown
Mapping speed: unknown

Available data sources

Tasks

JOSM Workflow

Setup

• Task Config
• Activate the following in from JOSM preferences > Map Settings
  • Map Paint Styles: Lanes and road attributes
  • Tagging Presets: lane attributes
• Filter out non road features with boundary: | leisure: | landuse: | waterway: | amenity: | natural: | building:
• Read http://wiki.openstreetmap.org/wiki/Key:turn:lanes

Mapping

• Check all motorways for turn lanes at exits and entry points
  
• Split the road into segments based on the total number of lanes for the segment
• For each road segment tag the turn lanes based on the road markings in the direction of the way. Eg. turn:lanes=left|through|right. See OSM turn:lanes
• For bi-directional segments, use turn:lanes:backward= and turn:lanes:forward= to specify turn lanes in each direction.
• Verify correct tagging using the Lane attributes style
  

Changeset Comment: Add missing turn lanes from satellite imagery https://github.com/mapbox/mapping/issues/144
Source: Bing/Mapbox