@95mira:
Yes, it's right: The Train pass Activation-Point 500 Meters before the Level-Crossing. And the level Crossing Signal with the flashing white light) is standing directly before the Level-Crossing.
But sometimes (p.ex. in a curve) a second Level-Crossing-Signal is standing 100 or 200 Meters behind the "Activation-Point". And for this case I've made this "100-Meter-Level-Crossing-Signal". So, if the Train pass the activation Point in a curve, the Level-Crossing-Signal in the curve is starting to flash exactly in this moment.
I hope, you understand... it's a little bit complicated...
To be on the safe side, I've made different Versions from the Level-Crossing signal:
1. The LC-Sig starts with flashing 80 meters before the Train pass the Signal.
2. The LC-Sig starts with flashing 100 meters before the Train pass the Signal.
3. The LC-Sig starts with flashing 100 meters before....
4. The LC-Sig starts with flashing 120 meters before....
5. The LC-Sig starts with flashing 250 meters before....
6. The LC-Sig starts with flashing 500 meters before....
So you will have for all possible cases the right signal.