[OSRM-talk] getting into Oxford Street

Daniel Patterson daniel at mapbox.com
Sat Mar 18 18:46:29 UTC 2017


Hi Alan,

  Hmm, the best way to figure this out is going to be to use the OSRM debug map:

    http://map.project-osrm.org/debug/#15.79/51.5140/-0.1515 <http://map.project-osrm.org/debug/#15.79/51.5140/-0.1515>

  This shows roads that are routable (colored), and roads that are isolated from the rest of the network (highlighted in pink).

  I can see that there are some missing roads as well - this means that OSRM has removed these from the routing network,
  usually because of access restrictions (i.e. no cars allowed).

  This node:

    http://www.openstreetmap.org/node/2198870645 <http://www.openstreetmap.org/node/2198870645>

  indicates that you can't continue straight along Oxford Street there - you're only allowed to turn left.  I don't know if this is real or not.
  There are also no turns allowed from Regent St onto Oxford St here - this is preventing access to the section of Oxford St just to the
  west here.

  The OSRM demo server updates with new data every couple of days.  If you make changes to OSM, you can check:

    http://router.project-osrm.org/status <http://router.project-osrm.org/status>

  to see what data the OSRM demo server is using, and whether any changes you've made have taken effect yet.

daniel

> On Mar 16, 2017, at 7:21 AM, Alan Bell <alanbell at ubuntu.com> wrote:
> 
> Hi all
> 
> there is a segment of Oxford Street in London from about the Park Street/Portman Street crossing to Regent Street where the turn restrictions prevent you from going straight on into it, or turning left or right from any of the crossing roads.
> 
> http://map.project-osrm.org/?z=15&center=51.514218%2C-0.130098&loc=51.515313%2C-0.140419&loc=51.514525%2C-0.147876&hl=en&alt=0
> 
> so without any one way street issues, this is an area of perfectly good road from which you can exit but never enter.
> 
> I am not entirely sure what the facts on the ground are (it isn't a very sensible place to be driving) but is there something that can be done in the profile or by editing the map to avoid that bit of road if it has actually been pedestrianised or something?
> 
> Alan.
> 
> 
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