traffic.md

Traffic Signals Guide

In the table below, we have enlisted the signals that we should look out for in the Mapillary Imagery in order to map obvious traffic data like turn restrictions, speed limits, etc. The OSM Tag column enlists the tagging convention for each traffic symbol and the Node/Way/Relation column enlists the object on which the tags can be applied.

Symbol	Description	OSM Tag	Node/Way/Relation
	Speed limit	traffic_sign=maxspeed; maxspeed=*	Node/Way
	Minimum speed limit	minspeed=*	Node/Way
	No straight through	restriction=no_straight_on	Relation
	No Right Turn	restriction=no_right_turn	Relation
	No Left Turn	restriction=no_right_turn	Relation
	No Turns	restriction=only_straight_on	Relation
	No U-turn	restriction=no_u_turn	Relation
	No Left or U-turn	restriction=no_right_turn; restriction=no_u_turn	Relation
	Bike lane	cycleway=lane; bicycle=yes	Way
	No motorized vehicles	restriction=motorcar	Way
	One Way	oneway=yes	Way

"No Left Turn" should be restriction=no_left_turn rather than no_right_turn