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.
Route planning with OpenRoute might be enhanced, knowing the limits. Incorporating speed limit warnings into SatNavs would be better if the data were complete. I am mentioning OpenStreeetMap to The Institution of Engineering and Technology www.theiet.org to see if that sparks an interest.

asked 14 Sep '11, 16:48

Steve%20Nash's gravatar image

Steve Nash
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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".

(14 Sep '11, 17:21) SomeoneElse ♦

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.

(15 Sep '11, 23:10) dieterdreist

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)

permanent link

answered 14 Sep '11, 16:58

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EdLoach ♦
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edited 14 Sep '11, 16:59

Have a look at maxspeed in the OSM wiki ... there are even links a special UK maxspeed map.

permanent link

answered 15 Sep '11, 18:07

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stephan75
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question asked: 14 Sep '11, 16:48

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last updated: 15 Sep '11, 23:10

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