路口畫法討論
十字路口
方案一

http://www.openstreetmap.org/#map=19/22.67878/120.30798
Ref
http://wiki.openstreetmap.org/wiki/Proposed_features/Street_area
http://wiki.openstreetmap.org/wiki/Lanes_and_complex_intersections_visual_approach
方案一

http://www.openstreetmap.org/#map=19/22.67878/120.30798
http://wiki.openstreetmap.org/wiki/Proposed_features/Street_area
http://wiki.openstreetmap.org/wiki/Lanes_and_complex_intersections_visual_approach