There are all kinds of isolated systems that trigger warnings but the thing that seems to be missing everywhere is a centralized simulation with all the data in it. Or perhaps a series of simulations each slightly further in the future. If any variable changes run it again until it reaches its time stamp.

For example, it shouldn't be possible in 2026 for a vehicle to get stuck on the crossing (with cameras) without the train driver getting a notification. You can even power down an entire track if it's obstructed. You might not want self driving, self breaking seems quite desirable.