Better sync of u-turn customisations

[originalfoo]

There are three ways to control u-turns at junctions:

1. Vehicles may do U-turns at junctions mod setting (policies and restrictions tab)
2. Junction restrictions
3. Lane connector

There is some disconnect between 2 and 3.

• If I create a u-turn with lane connector, I can't remove it with junction restrictions
  • Junction restrictions detects that there is a u-turn but won't allow me to disable it via the icon
  • Desired behaviour: I should be able to disable a u-turn via junction restrictions (it would remove the relevant lane connections)
• If I create a u-turn with junction restrictions, there's no visualisation of that in the lane connector
  • Desired behaviour: The u-turn lane connection(s) should be visible in the lane connector
  • ...unless it's a default u-turn (due to mod settings)..?

[krzychu124]

Yes, I've noticed that and I think its possible to do this but currently I have no idea how much work is needed to improve that.

[originalfoo]

As u-turn is essentially a lane arrow / connector thing, would it be worth merging in with those features? It would be removed from junction restrictions and become part of #41 'Lane Routing' tool.