Definitely seen a spike in these URs in the last couple of weeks. All junctions so far have been setup to trigger detour avoidance and the junctions I know of don't suffer from long tailbacks that might nudge Waze to use the roundabout. Seems the routing server is not playing nicely.

SteveSnail wrote:Can a L5 please have a look at this and make any necessary changes for detour prevention here? The segments are locked to L5. Thanks

Done. I'll leave you to test (if possible) and reply to the UR.

SteveSnail wrote:@ditchi56 There's another one here were detour avoidance isn't set up, the exit/entry slip roads are named differently

Would you mind having a look at this one too please?

Permalink

Thank you

It's usual for slip roads to have different names, what matters for detour avoidance is that the main line road segments (those you don't want to be detoured off) should have the same name - and here they do "M1 (S), no city, Central Bedfordshire".

However, the road was closed according to Highways England! There was supposed to be daytime resurfacing last weekend, just within the junction, so Waze was correct to try to detour people up and down the slip roads. Whether the closure actually happened on the ground, I don't know. It is not unknown for roadworks to get cancelled but stay on the Highways England feed.

The first UR was timed just before the roadworks were due to end, and it is usual for there to be a time lag between the closure ending on the ground and the Highways England feed updating. However, the second UR was closer to the middle of the "closed" period, hence me now wondering whether it happened at all.

Anyway, I can't see a problem with Waze here. It's dealing with the data it's given as best it can. UR's replied to & closed.

Ian

SteveSnail wrote:Seems like one here too: Permalink

Trying to wrap my head around the detour prevention here, would the problem here maybe be that the first segment before the detour has a county of Hertfordshire whereas the first one after the detour has a county of Central Bedfordshire? Or does the detour prevention mechanism only look at the segment name and not the city/county?

Any other reason for an off/on here you can see (other than the routing server playing up)?

Generally the road name of the continuation must be the same throughout the main route, including the segment before and after, and both main and alternative names are looked at. In this case, they are the same. I've noticed in the past that the county could also have an effect. The segment before the junction is Hertfordshire and the new two are Central Bedfordshire. I suggest making sure the counties are the same. The may have to be split.

atrophicshiner wrote:Definitely seen a spike in these URs in the last couple of weeks. All junctions so far have been setup to trigger detour avoidance and the junctions I know of don't suffer from long tailbacks that might nudge Waze to use the roundabout. Seems the routing server is not playing nicely.

Seems like one here too: Permalink

Trying to wrap my head around the detour prevention here, would the problem here maybe be that the first segment before the detour has a county of Hertfordshire whereas the first one after the detour has a county of Central Bedfordshire? Or does the detour prevention mechanism only look at the segment name and not the city/county?

Any other reason for an off/on here you can see (other than the routing server playing up)?

Kkervinjones wrote:

SteveSnail wrote:Seems like one here too: Permalink

Trying to wrap my head around the detour prevention here, would the problem here maybe be that the first segment before the detour has a county of Hertfordshire whereas the first one after the detour has a county of Central Bedfordshire? Or does the detour prevention mechanism only look at the segment name and not the city/county?

Any other reason for an off/on here you can see (other than the routing server playing up)?

Generally the road name of the continuation must be the same throughout the main route, including the segment before and after, and both main and alternative names are looked at. In this case, they are the same. I've noticed in the past that the county could also have an effect. The segment before the junction is Hertfordshire and the new two are Central Bedfordshire. I suggest making sure the counties are the same. The may have to be split.

Can a L5 please have a look at this and make any necessary changes for detour prevention here? The segments are locked to L5. Thanks

@ditchi56 There's another one here were detour avoidance isn't set up, the exit/entry slip roads are named differently

Would you mind having a look at this one too please?

Permalink

Thank you