[OSM-talk] Traffic Signs

[Maarten Deen]

On 2015-09-30 11:14, Martin Koppenhoefer wrote:
> 2015-09-30 10:18 GMT+02:00 Lauri Kytömaa <lkytomaa at gmail.com>:
> 
>> In my experience collecting the signs exhaustively has revealed
>> smaller and
>> bigger errors in osm data, and also in the signs (say, "leaking"
>> zone signs,
>> missing parking restrictions and different moped allowances in
>> different
>> opposing directions on combined cycling and pedestrian ways).
> 
> Not sure, but it might be valid to have different access restrictions
> (e.g. moped) on the same way, depending on the direction (while it
> must not be on purpose, there is still the possibility it is on
> purpose, similarly, maxspeeds for non divided, one carriageway roads
> might be different depending on the direction of travel).

The city of Amsterdam is very good at this. One-way streets very often 
have no signs at the side where you are allowed to enter but have a sign 
"closed for motorized traffic with more than two wheels" on the other 
side.

Effectively it is not a one-way street because cars are still allowed to 
turn around and you can drive in reverse (not allowed in a one-way 
street).

How would you put this as a restriction in OSM? motorcar:backward=no or 
something?

Maarten