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Hi, Am new to OSM and am looking for inputs on if I can get information on roads with SharpCurves. I have seen a couple of links (posted below) where users pointed out proposed features for curves like Warning: CurveLeft or Hazard: Curve. But I dont think there is supports for the same. So some one please clarify if I can get information about curves. Thanks in advance.


asked 29 Jan '18, 18:09

vamsimp's gravatar image

accept rate: 0%

edited 30 Jan '18, 21:38

aseerel4c26's gravatar image

aseerel4c26 ♦

what do you mean by "get information on roads with SharpCurves"? Do you want to contribute to OSM or do you want to use OSM's data? Please describe a bit.

(30 Jan '18, 08:00) aseerel4c26 ♦

I assume varsimp wants to find tight radius, high G curves and although they could be estimated a bit from Bing or DG the camber and road surface friction can't be.

(30 Jan '18, 09:03) andy mackey

I basically want to use OSM data to find if there are curves on the roads.

(30 Jan '18, 11:56) vamsimp

@Andy, Thanks for the info

(30 Jan '18, 12:03) vamsimp

Okay, so are you asking for tags which are possibly used to mark such curves? What about calculating a curve radius based on the geometry or curves?

(30 Jan '18, 21:40) aseerel4c26 ♦

hazard=curve from the hazard proposal has been used almost 900 times.

However aseerel4c26 has a valid point. Sharp curves can be calculated very easily by navigation software if the roads are mapped with sufficient detail.

Of course there can be additional conditions making a curve particularly difficult, such as a bad surface or frequent wetness due to high humidity, a stream running over the road and similar causes. In these cases just looking at the road geometry isn't enough. See also hazard=slippery_road.

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answered 31 Jan '18, 14:14

scai's gravatar image

scai ♦
accept rate: 23%

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question asked: 29 Jan '18, 18:09

question was seen: 2,166 times

last updated: 31 Jan '18, 14:14

NOTICE: is no longer in use from 1st March 2024. Please use the OpenStreetMap Community Forum