Dobrindt said the accident investigation would focus in part on whether the cab signalling system with which both trains were fitted, called PZB90, were working.
The proposed model reflects the constraints of signalling system and train protection operations rules.
Railway infrastructure is divided into technical subsystems, including substructure, track, electrical system, signalling system, and telecom system [23].
For Red and Yellow lines ALSTOM has supplied signalling system and for line Green and Voilet Bombardier Transportation has supplied CITYFLO 350 signalling system.
Flagellar motility may be controlled by a chemotactic signalling system encoded among flagellar biogenesis genes.
> -wrap-foot> an alternativeive signalling system, the D. desulfuricans genome has many genes relevant to a cyclic diguanylate (c-diGMP) signalling system, although these were less abundant than in other deep-sea vent bacteria (Table 2).
One such pathway is Delta/Jagged-Notch signalling system, which is generally involved in cell fate decisions.
The HSE investigation has focused on the operation of the signalling system and the level crossing equipment at the Ufton site.
Investigators found no evidence of errors on the part of railway staff or faults with the level crossing, the signalling system or the train itself.
In 2014, two German physicians, who had won a World Pairs Championship, were banned for ten years by the World Bridge Federation for using an auditory signalling system.
Manaugh cites the example of a school boy in Łodz, Poland, who modified his TV remote control and created a superswitch for the city's tram signalling system.
