Is anybody looking at the completeness of speed-limit data for UK roads? Unlike Finland, Netherland and some others the UK has no central map of speed limits. asked 14 Sep '11, 16:48  Steve Nash |
2 Answers:
Steve, you could try one of the ITO Maps to see if that shows what you are looking for? e.g. ITO - Map (Speed Limits mph) (Edit: I copied my bookmarked link which I've been using to see how much progress I've made locally) answered 14 Sep '11, 16:58  EdLoach ♦ edited 14 Sep '11, 16:59 |
Have a look at maxspeed in the OSM wiki ... there are even links a special UK maxspeed map. answered 15 Sep '11, 18:07  stephan75 |
As important as completeness is accuracy. There have unfortunately been a number of places where people have stuck e.g. maxspeed=60mph on roads because "well, it probably is, and that's the default national speed limit for cars on single carriageway roads".
it might make more sense to do this inside the town. We started to use explicit default maxspeeds together with source:maxspeed=IT:urban on mayor roads inside town and it improved the routing a lot. Of course when there is an actual sign this gets updated.