ZUB

ZUB is the security system in the simulator used on the A line and is used on the RSG2, RSG3 and SG3. The difference between the ATB and the ZUB is that the ZUB uses light signals.

The ZUB system uses the following signals:

ZUB Signal	ZUB signal	Maximum speed	More info
Green signal		Local Speed	Proceed, The next 2 blocks are free.
Yellow signal		Local Speed	Proceed, reduce speed to stop before the next signal.
Yellow - Red signal		10 km/h	Next block is full, passing signal is allowed to couple.
Red signal		0 km/h	Stop, Passing signal not allowed
Green + blinking number		Number x10 km/h	Proceed,slow down speed must be reached at next signal.
Green + number		Number x10 km/h	Proceed with speed as shown by number x 10, the next 1 blocks are free.
Yellow + number		Number x10 km/h	Proceed, reduce speed to stop at next signal.
No light		0 km/h	When white cross is attached to signal: proceed,signal out of use. Otherwise:stop immediately.

Signs used on ZUB tracks

The ZUB uses signs for the maximumspeed, the used ones are bellow.

Sign	Sign	Maximum speed	More info
Speed Sign		Number x10	Local speed is the number x10
Track Speed		Number x10	Track speed is number x 10 from this place until the next green sign. Local speed may be lower, as shown by white speed signs.
Reduce Speed		Number x10	Reduce speed to number x 10, white speed sign will follow where speed has to be reached.
Station		Reduce Speed to 50km/h	Reduce speed to number x 10, white speed sign will follow where speed has to be reached.
End of ZUB system			End of the part protected with ZUB, appears when switching to other system (ATB).
End of train protection			From this point there is no more protection of track and junctions.