With sound signal
- crossings without barriers
- Crossings with pour visability: whenever you can't see the crossing 100 metres in advance while driving
- Behind a bend
- Behind a hill
This can be checked quite easily with the black circle you get in the WME after selecting a crossing. If the crossing is visible 100 metres in advance, we still map the crossing, but point the marker away from the street to disable the alert. .
Without sound signal
- All other crossings