[Tagging] Usefulness of bicycle=dismount on ways

John F. Eldredge john at jfeldredge.com
Thu Oct 10 21:56:21 UTC 2013

On 10/10/2013 01:13 PM, fly wrote:
> On 10.10.2013 20:03, Mike N wrote:
>> On 10/10/2013 1:55 PM, Jonathan wrote:
>>> The only way to tag the effect that the sign has is to change the access
>>> tag to exclude bicycles.
>> What about hints to the router that it's OK to send cyclists on this
>> route instead of taking a longer route?   Knowing that speed = walking
>> speed + time to mount/dismount allows it to make a decision when to take
>> a longer fully rideable route VS dismounting.
> And why do you need bicycle=dismount for this ?
> Think the width of the footpath is much more important.
> cu
> fly
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The width of the way is not the only issue.  If the width of the way on 
the section where you are required to be dismounted from the bicycle is 
the same as the width on the section where you are allowed to ride the 
bicycle, then if only the width is tagged, the router does not have a 
way to know that the dismounted-only section will take longer to 
traverse.  If you ride the bicycle on the section where riding isn't 
allowed, you may potentially be cited by the police and/or put yourself 
in danger, as in the bridge I described with the low handrail.

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