On 4/23/14 10:14 AM, André Pirard wrote: > On 2014-04-22 23:46, Richard Welty wrote : > > i would like to add emergency (for emergency vehicles) to the list of > > vehicle types for the except tag. > Supposing that emergency vehicles can do almost everything (who would > tell a fire van for example not to drive on the wrong side over some > distance or make a forbidden turn if that's to put out a fire without > endangering other road users), I think that routing devices should > apply special logic for them to disregard most restrictions. Hence, > what should be on the map instead is restrictions that they should > obey despite that, sort of telling them "if you disregard this, you > won't put out your fire". if this is the case, then it needs to be explicit in the wiki so that routing engines can handle it.
i'm not sure that it is generally the case. i have looked it up in New York State law and it is certainly true in this jurisdiction, but for the US at least, it'll be state by state. the signage in some other states in the US for restricted U-turns has an explicit authorization posted at each U-turn. i honestly don't have a feeling for how general the notion that emergency vehicles can ignore all access restrictions really is. richard -- [email protected] Averill Park Networking - GIS & IT Consulting OpenStreetMap - PostgreSQL - Linux Java - Web Applications - Search
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