This is the second time today that I make a train tunnel and every time I do this the train can't find a route. The connection seems fine. I made the tunnel just the regular way (i.e. didn't mess with the underworld) but the trains refuse to consider the route through the tunnel. I'm using the nightly build 100.1-2070 and pak128-179.
Thanks!
Make sure, you built the connecting track until the tunnel portal and do not just stop direktly in front. THe ribi must be (for a straight track) either 5 or 10.
Ah that was it! I knew I had to put a track on the slope where I wanted to start a tunnel but I forgot about the track on the other side! Thanks.