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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