Linienzugbeeinflussung
![Track equipped with LZB loops.
Notice the second cable on the lower part of the left rail.](/Images/godic/202501/06/Feste_Fahrbahn_FFBögl2229.jpg")
![Main console of an ICE 2 train in LZB mode. The current, the maximum and the target speed is 250 km/h. The target distance is 9.8 km](/Images/godic/202501/06/Ice2_mfa_on_lzb2229.jpg")
![Cable loop](/Images/godic/202501/06/Lininenleiter_im_Gleis_mit_Kreuzungsstelle2229.jpg")
![Short loop cable configuration.](/Images/godic/202501/06/LL-Verlegung2229.png")
Linienzugbeeinflussung (or LZB) is a cab signalling and train protection system used on selected German and Austrian railway lines as well as the AVE in Spain. In Germany, the system is mandatory on all lines where trains exceed speeds of 160 km/h (99 mph) (200 km/h or 120 mph in Spain), but it is used on some slower lines to increase capacity. The German Linienzugbeeinflussung translates to continuous train control, literally: linear train influencing. It is also called linienförmige Zugbeeinflussung.