I set up a 4 way crossing, I added signals so when I actually have an iron train that would cross with the coal track, they won't collide. However, the coal train now gives me a No Path error. According to all of the wiki articles and youtube stuff I've seen the signals are in the correct locations. The train has engines on both ends. It just needs to go to one end of the line, then the other.
Someone tell me what I need to change to make the trains not error out.