[Tagging] More human readable values for traffic signs

[Philip Barnes]

On Sat, 2015-10-31 at 01:31 +0200, Lauri Kytömaa wrote:
> 
> Even the no entry (round red sign with a yellow/white horizontal 
> rectangle) sign _effectively_ makes a short section oneway: every
> vehicle has length, so at some point coming from the "oneway"
> direction, there's at least a small (but several meters) distance 
> where they aren't allowed to turn around - if they did, they would
> unavoidably pass the no entry sign.
> 
Its not always used to indicate a one way, it means do not enter.

It is often used to simply prohibit traffic, with exceptions shown on a
plate below. Except buses (and taxis) is often used in the UK, "sauf
riverains" is common in France and both indicate an access restriction,
not a one way.

Phil (trigpoint)