[Talk-GB] Where does a motorway start?

[Andy Townsend]

On 03/08/2022 11:37, Tony Shield wrote:
> There is an issue with the OS maps your refer to  - the April 2022 
> version is downright wrong. 
> https://os.openstreetmap.org/#zoom=16&lat=53.85451&lon=-1.33906 shows 
> the exit onto the roundabout as Motorway, it is not it is the A560 
> exit ramp and starts before the motorway. Similarly the northbound 
> on-ramp is non-motorway.  The 2016 version shows it correctly.
>
Permalink for reference:

https://os.openstreetmap.org/#zoom=16&lat=53.40019&lon=-2.2682

Yes - that looks like a specific "OS OpenMap Local" cockup at that 
junction, introduced between April 2019 and April 2020.  It's a road 
that becomes a motorway (the start of the M56) so, as the Mapillary link 
confirms, of course non-motorway traffic can leave.

The relevant "moving the motorway start" changeset for this one is I 
think https://nrenner.github.io/achavi/?changeset=124368992 .  I'd have 
thought that the start of the motorway here would be where the M56 is 
signed as starting, but I'm not familiar with this junction.

Best Regards,

Andy