2D95 Saltburn to Bishop red/amber lights for no reason then stuck on red before Redcar Central. Im going to restart to see if it isnt a one-off.
There is another (too close) train at the next station and i think the two red/amber signals are keeping you distance to the train in front of you. I approached the red signals slowly until they went amber. When the distance to the train in front of me became bigger, all signals were green.
Both trains are leaving their station at the same time (AI at Marske), i have no other explanation for the red/amber signals. At some point i'm still loading passenger while the other train is already moving and all upcoming signals are green now.
Sometimes it's worth checking the in-game map to spot if any other trains are a priority with the despatcher.