[Tagging] traffic lights

Nathan Edgars II neroute2 at gmail.com
Sat Sep 3 11:10:48 BST 2011


On 9/3/2011 6:06 AM, Nathan Edgars II wrote:
> highway=traffic_signals means "this intersection is governed by traffic
> signals". If you want a tag for "there is a physical signal here", use a
> different one. Using highway=traffic_signals for this will lose
> important information about what intersections have signals (for
> example, a router can no longer say "turn left at the second signal").

Actually this is a bad example, since there are many reasons for having 
more than one traffic_signals node at an intersection. But when turning 
onto a trunk from a residential, for example, a router will want to put 
you out at a traffic signal, and this is much easier when the 
intersection node is clearly labeled.



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