[OSRM-talk] Exclude bridge from OSRM calculation

[Jason Dalton]

Create a class in your OSM extract for the collapsed bridges.  Compile two
different OSRM profiles - one that avoids class 'bridge-collapsed' and one
that doesn't.


On Tue, Oct 29, 2019 at 7:27 AM ANDRES ABARCA <andres.abarca at iusspavia.it>
wrote:

> Hi Nikhil,
>
> Thanks for the response! I was checking the car.lua and I will keep
> looking into it, but I think this would work for a generalized restriction.
> But I don't want to exclude all bridges, I want to exclude some specific
> ones (detected as collapsed).
>
> Best regards,
>
> Andres
>
> Il giorno mar 29 ott 2019 alle ore 12:14 Nikhil VJ <nikhil.js at gmail.com>
> ha scritto:
>
>> Hi Andres,
>>
>> Instead of trying to actually remove the bridge data, why not instruct
>> (your own instance of) OSRM to avoid bridges when reading the OSM data?
>>
>> Take a look at
>> https://github.com/Project-OSRM/osrm-backend/blob/master/profiles/foot.lua
>>
>> I don't know right now about bridges, but I was able to enable pedestrian
>> routing over trunk roads by tinkering around in this file and then building
>> and running OSRM.
>>
>> --
>> Cheers,
>> Nikhil VJ
>> https://nikhilvj.co.in
>>
>>
>> On Tue, Oct 29, 2019 at 4:03 PM ANDRES ABARCA <andres.abarca at iusspavia.it>
>> wrote:
>>
>>> Thank you for your response!
>>>
>>> I'm still inclining to use OSRM directly. Do you know if it would be
>>> possible to exclude bridges from the analysis if I use one of the
>>> Docker images?
>>>
>>> Also, in general, how would I proceed about removing a bridge? Should I
>>> (temporarily) remove it from the road data? Or could I query it out?
>>>
>>> Thanks for the help!!
>>>
>>> Best regards,
>>>
>>> Andres
>>>
>>> Il giorno ven 25 ott 2019 alle ore 14:16 Steven M. Ottens <
>>> steven at minst.net> ha scritto:
>>>
>>>> Hi Andres,
>>>>
>>>> The public web service doesn't allow for exclusion of roads/bridges. If
>>>> you setup your own copy of OSRM you obviously do have the freedom to
>>>> exclude anything.
>>>>
>>>> Alternatively you could look into Rural Accessibility Map. An
>>>> application on top of OSRM developed for the Worldbank which is used to
>>>> calculate the impact of road improvements on the accessibility of a region.
>>>> You can use it to other way around as well: Calculate the impact of a
>>>> bridge collapse.
>>>>
>>>> http://rah.surge.sh/about+
>>>>
>>>> https://github.com/WorldBank-Transport/ram-backend
>>>>
>>>> Cheers
>>>>
>>>> Steven
>>>> On 25-10-2019 12:31, ANDRES ABARCA wrote:
>>>>
>>>> Hi! I'm a PhD student at IUSS Pavia doing research on the impact of
>>>> bridge collapse.
>>>>
>>>> I want to use the OSRM public web server to calculate a duration matrix
>>>> using the Table Service. How can I exclude a specific bridge (or several)
>>>> from the query?
>>>>
>>>> We use OSM information, so we do have the OSM id numbers for the
>>>> bridges we would be excluding.
>>>>
>>>> Thanks for any assistance you can provide.
>>>>
>>>> Best regards,
>>>>
>>>> Andres Abarca
>>>> PhD Student
>>>> IUSS Pavia
>>>>
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-- 
*Jason Dalton*
President, CEO
Azimuth1, LLC
703-618-8866
jason.dalton at azimuth1.com
www.azimuth1.com
https://www.linkedin.com/in/jasondalton/
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