Hi,
in a discussion during voting on my proposal of traffic_signals=crossing_only (https://wiki.openstreetmap.org/wiki/Proposed_features/traffic_signals%3Dcrossing_only)
there was mentioned that the existing values of traffic_signals=* partial rather describe the configuration of a traffic signal (blinker, continuous_green, blink_mode) than describing their responsibilty. But I think that's not the case for all ones, because "emergency", "bus/tram_priority" and "ramp_meter" are responsibilities, to me.
But how to tag a traffic signal which is blinking every time (blink_mode) but only activated/chaging to red for the cars when a pedestrian wants to cross (traffic_signals=crossing_only) then? Two tags get in conflict here, but I think both have a legitimation to get tagged. The same cann appear for a "bus_priority" signal, for example.
My question is, whether we need a new key for differentiation between "how is a traffic light configured" and "for what is a traffic light responsible".
Something like "traffic_signals:default_light"? Then the "resposibility" of a traffic light can go on traffic_signals=*, and traffic_signals:default_light could describe if the signal has a light before getting activated, so values could be "staying_green","staying_yellow","blinking_yellow", something like this.
I would like to hear/read what you think.
--Lukas
Gesendet: Freitag, 08. Mai 2020 um 11:25 Uhr
Von: lukas-...@web.de
An: tagging@openstreetmap.org
Betreff: Re: [Tagging] Feature Proposal - Voting - traffic_signals=crossing_only
Hi,
at the moment, there are not so many people who looked at my proposal for traffic_signals=crossing_only :
https://wiki.openstreetmap.org/wiki/Proposed_features/traffic_signals%3Dcrossing_only
I would look forward to some more people comment or vote on my proposal which has the aim to distingiush those highway=traffic_signals on "straight road" which control only a crossing from other types of traffic signals.
Current tagging (highway=crossing/crossing=traffic_signals, sometimes + button_operated=yes), does not allow to distinguish them clearly.
It carries potentially information because the traffic lights I mentioned have other circuits and are often activated on-demand only.
If questions comment either here or maybe rather on the discussion page.
--Lukas
Gesendet: Freitag, 01. Mai 2020 um 14:05 Uhr
Von: lukas-...@web.de
An: tagging@openstreetmap.org
Betreff: [Tagging] Feature Proposal - Voting - traffic_signals=crossing_only
Hello to everyone,
Voting has opened for the proposal of traffic_signals=crossing_only – see the proposal page here: https://wiki.openstreetmap.org/wiki/Proposed_features/traffic_signals%3Dcrossing_only
(please note the old name was traffic_signals=crossing_on_demand, but I changed that because the focus is not on the „on demand“, but on the „traffic lights for only a crossing“).
It has been discussed about on the mailing list at 2020-04-13 and a few days after.
The proposal's purpose:
traffic_signals=crossing_only marks those highway=traffic_signals which do only control a crossing
Why?
It's interesting for routers concerning penalty times (much lower on those points than for a junction) and at the moment, there is no real way to mark that:
highway=traffic_signals + crossing=traffic_signals is used together on the same node, but NOT only in those cases where there is a „crossing-only“ traffic light. It's also used on junctions. We discussed that it would be difficult to change that, because highway=traffic_signals + crossing=traffic_signals is an accepted tagging and can be used together also when the exact locations of the crossings - at a junction - are not known and in some other cases.
highway=traffic_signals + crossing=traffic_signals + button_operated=yes can be used, but with looking just at button_operated=yes, this does not mean that there is only a crossing and not a traffic junction. Crossings at junctions can have buttons for pedestrians, too, example: https://www.openstreetmap.org/node/3070180267
So the solution would be to add another under-category for highway=traffic_signals, as traffic_signals=* does it already.
--Lukas
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