BRouter start on roundabout

[devemux86]

I have just tried a few things and it boils down to roundabouts and slip-roads as starting points - replicated in several places on a map using duplicate "preferences" on both devices. If you attempt to start from a roundabout (ie: a place where fuel/services may be) then it won't "route". The on/off-ramp/slip-road does not route, either. You have to start the Route on the main carriageway or a little back from the roundabout.

See example below:
It will "route" on the main A15 towards the bridge (Humber Bridge), but not on the entry-ramp, so you have to fine a "clear" piece of road.

Given that this issue would affect any user of BRouter+Cruiser, certainly worth posting here, too :)

Originally posted by @MotoUKRider in #149 (reply in thread)

[devemux86]

@MotoUKRider @0709wiwiwi

The issue is in Cruiser reader of the BRouter responses. The 1st trkpt contains:

<sym>roundabout_e2</sym>
<type>Via</type>

Usually we expect in the 1st trkpt:

<sym>pass_place</sym>
<type>Via</type>

Looks like we need to adjust the Cruiser reader of BRouter responses?

---

BRouter issue:

• Roundabouts and Slip-Roads abrensch/brouter#545

[MotoUKRider]

I'm so glad it wasn't me, but frustrating that I wasn't able to see this myself via debugging in some way :) ie: "No route" is quite vague.

It's nice to be able to pick out little things like this, and it could certainly help others if they have Routes that start in a similar way.

With my previous experience of items (such as level-crossings) being tagged in different ways preventing pass, I had thought that it may have been the (free to motorcycles) Humber Bridge toll, then perhaps the roundabout itself, but then when I tried other roundabouts in random places, I experienced the same issue.

[devemux86]

@MotoUKRider thanks for your time and tests! 👍

We need to clarify with @afischerdev and then proceed with the fix. 🙂

[devemux86]

@MotoUKRider thanks for the report!

It will work properly in the next Cruiser update.

[devemux86]

It works properly in Cruiser 3.0.19.

[MotoUKRider]

Thanks - tested and working with latest Cruiser+BRouter combo :)