Hello,
In Sweden where I live, there is a signal at every railway crossing, that indicates to the train if the gates and warning lights are activated correctly. There is also a distant signal about 1000m away so that trains have a chance of slowing down if the railway crossing isn't working.
Is there a similar system in other countries? I assume there is, but I havn't been able to find any information about this.
The swedish signal: https://www.google.se/maps/@57…!7i13312!8i6656?entry=ttu
The distant signals: https://www.google.se/maps/@57…!7i16384!8i8192?entry=ttu
/Anton