[OSRM-talk] getting into Oxford Street

Alan Bell alanbell at ubuntu.com
Sat Mar 18 20:05:14 UTC 2017


that is great thanks, I think it wasn't showing as pink because it isn't
fully isolated (it is a source, you can leave, but not get there) and it
was isolated by turn restrictions rather than barriers or one ways. I think
the facts on the ground are that it is only for buses and taxis, but I will
try and visit there at some point over the next few weeks and survey it
properly.
Off to London protesting against Brexit at the weekend, so maybe I will
have a quick peek then!

On Sat, Mar 18, 2017 at 6:46 PM, Daniel Patterson <daniel at mapbox.com> wrote:

> 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
>
>   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
>
>   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
>
>   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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