[Tagging] Divided highways, and not so divided highways, one way or two

Colin Smale colin.smale at xs4all.nl
Fri Oct 11 09:22:08 UTC 2019


On 2019-10-11 11:09, Snusmumriken wrote:

> It is up to the driver. I think he can ignore most of the traffic laws
> in the cause of getting as fast and as safe to where he needs to go. So
> he would use his own judgment and not so much what a routing engine
> tells him what he can do.

That may be the case in some countries, but in the UK there are
limitations on what laws emergency vehicles can and cannot break. 

Countries also have differing definitions of what constitutes an
"emergency vehicle" for these purposes. A regular doctor on his way to
an emergency, organs for transplant for example... in the UK they cannot
use blue lights, and "people die" because these vehicles get stuck in
traffic. 

See this website for all the complexities: 
http://www.ukemergency.co.uk/blue-light-use/ 

The question is, how to model this in OSM? Or do we just model for
normal cars? Just like for trucks, routing for emergency vehicles needs
parameterisation for the vehicle characteristics and the specific use to
which it is being put *at that moment*.
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