[Talk-GB] Departure boards at bus stops

[Andy Townsend]

Hello,

I'm in the process of adding slightly different symbols to bus stops at 
map.atownsend.org.uk based on whether the stop has a timetable or not, 
or a real-time display (see 
https://github.com/SomeoneElseOSM/openstreetmap-carto-AJT/commit/d5d05e55be7837a57560c5b8e98315865ef088ad 
for a preview of the icons).

Values in use worldwide can be seen here:

https://taginfo.openstreetmap.org/keys/departures_board#values

and in the UK here:

http://taginfo.geofabrik.de/europe:united-kingdom/keys/departures_board#values

It can be seen that most of the semicolon-separated variants are (a) in 
the UK and (b) actually mean the same thing ("there is both a realtime 
display and a timetable here").

Taginfo suggests that various editors support "no", "yes", "realtime", 
"timetable", "delay" (which means "interval") and "interval".  See 
https://taginfo.openstreetmap.org/keys/departures_board#projects and 
sort by project.

No-one (apart from me) supports the semicolon-separated values.

Assuming that these do really mean the same thing, would it make sense 
to consolidate these:

timetable;␣realtime  259    1.88%    -
timetable;realtime    67    0.49%    -
realtime;timetable    13    0.09%    -
realtime;␣timetable    6    0.04%    -
Timetable;␣realtime    3    0.02%    -
Timetable;␣Realtime    2    0.01%    -
Realtime;␣Timetable    1    0.01%    -


into one value?  My suggestion would be to change them to 
"realtime;timetable" as that is the semicolon version that has most 
non-UK usage (see https://overpass-turbo.eu/s/1HtB ), it puts the most 
important information first, and it omits the semicolon.  However, I 
have no strong views

For completeness there is also 
https://taginfo.openstreetmap.org/keys/passenger_information_display#values 
.  That has its own problems (does a printed timetable count as a 
"passenger information display"?), but this question is just about the 
semicolon-separated "departures_board" values.

Best Regards,

Andy