[0.16.37] Gate stops emitting signal before closing

[Wizard Marcos]

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).

Images

As it starts crossing:

A few moments later:

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.

[Loewchen]

viewtopic.php?f=23&t=31941

[Wizard Marcos]

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

[steinio]

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