update highway=traffic_signals

[openstreetmap.org-user-d1g]

Namely, traffic_signals:direction is missing.

See ​http://wiki.openstreetmap.org/wiki/Tag:highway%3Dtraffic_signals

[Don-vip]

If added it should come together with a validator warning according to ​http://wiki.openstreetmap.org/wiki/Key:traffic_signals:direction

Note that this tagging is ambiguous in case the node belongs to more than one highway=*! For this reason, use the traffic_signals:direction=* tag only on nodes which are part of exactly one highway. Avoid junction nodes and nodes between two ways as well (where they have been split, but are connected by a node). If in doubt, better simply insert a new node into the way which can be freshly tagged.

[Klumbumbus]

see also #10260

[skyper]

Replying to Don-vip:

If added it should come together with a validator warning according to ​osmwiki:Key:traffic_signals:direction

Note that this tagging is ambiguous in case the node belongs to more than one highway=*! For this reason, use the traffic_signals:direction=* tag only on nodes which are part of exactly one highway. Avoid junction nodes and nodes between two ways as well (where they have been split, but are connected by a node). If in doubt, better simply insert a new node into the way which can be freshly tagged.

Or simply use direction which was and still is a valid alternative before someone invented a tag with restrictions of use on nodes only because it seemed to complicated to understand the existing, working tag and to code proper support for it.

[Klumbumbus]

traffic_signals:direction was added in r15195.