gbnmkgr: Milton Keynes Grid Roads

[Jim]

Tier 6 systems should not be a problem any longer on Mapview.  It would be good to give a thorough look elsewhere to make sure that upper limit of 5 wasn't hard-coded anywhere else.

[michih]

V4:
H10/V6 -> V6/H10 ? since the route is V too.


V6:
H10/V4 -> V4/H10 ?

[michih]

- please change tier 5 -> 6 since some wp labels had to be changed (B -> H/V) if it would remain tier 5

If tier 6 is working, I will change it back. However I don't know why, if this system was tier 5, it would overdo the labels from the other tier 5 system.

If gbnb and gbnmkgr would both be tier 5, the gbnmkgr Bxxx labels should be Hxxx or Vxxx labels since that's the primary prefix for that system. I think that how we went with nlds system. I just fail to find examples...

[si404]

H5:
Add wp for partial GSJ west of A4146, also for A509

What partial GSJ? There's two Js. LILOs. But there's nothing remotely like a partial GSJ there.

H8:
Add wp for GSJ west of WadLn

There's no grade separated junction there. Again, it's just some LILOs with zero overbridge.

If these side roads were important, then rather than a LILO, there would be some way of accessing the other direction.

[michih]

Fair enough...

[michih]

https://github.com/TravelMapping/HighwayData/pull/8427

Looks good. Ready to go active I think