Factorio Forums

I was setting up an automated rail crossing, and was using the signal from the gates on the tracks to know if a train was there or not. But the other gates unlock before the train finishes passing (while the gate on the rail is still open).
I was trying to avoid using signals to not mess with the rail network or run cables to existing signals but...
Attached is the save where I was testing this.

Oh. That's a shame, will need to use signals then.

But damned chain signals are not writable to lock a chained path.
Needs a rail signal but breaks a chain signaled path...