- It only protects speeds of 40, 60, 80, 130 and 140 km/h. So when there is a local speedlimit of 100 km/h, the system will still allow 130 km/h.
- When a change in the speed limit is detected, next to a visual signal to the driver indicating the speed limit, it will sound a single "ting!" sound.
- When the train exceeds the speed limit, a continues bell sounds ("trrrrrrrrrring"), until the driver breaks.
- When a slower speed limit is in effect, and the train is breaking, the system will give three bells when the train has come below the speed limit ("Tring Tring Tring"; sounds like an old-fashioned telephone), indicating to the driver he doesn't have to break further.
- If the driver does not react to the overspeed-sound, the system will apply the emergency breaks, until the train is at a full stand-still. The driver can not overrule this until the train has stopped.
- And there is also the deadman-switch; the driver has to release it and press it again (usually, it's a foot pedal) every 30 seconds while driving. If he doesn't, a buzzer will sound. If the doesn't react within a few seconds, it will trigger another emergency breaking.
See also: https://en.wikipedia.org/wiki/Automatis ... Fnvloeding
In the simulator, these sounds are missing....(as it is just a modified RET ATB system ). But the correct speed limits, according to ATB-EG, are enforced.