Problems with YARN intersections

I've been having problems with the yarn intersections. All the cars will stop regardless of the signals (example: cars will not move at green signal). Assets used: TUME-Region-USA-60-101 , YARN L2 DL1 +Si +Sh , YARN Intersection L4L2-4Si +4Sh.

Intersections in general, including YARN, dont stop traffic or control traffic in anyway. The traffic lights are cosmic. You would need to setup ATLS and invisible roads on top of the intersections to implement any sort of functionality.

Also you shouldn't be using YARN as they float above the surface, which was why YARNish versions came out a longggg time ago to solve that problem. Traffic will pile up at intersections but only in surveyor mode, and should continue in an actual session, from memory.