Safe consist lenght, ETCS

Information about the set of vehicles in rear of and (if any) in front of the engine, taking into account the side of the active cab which defines the front of the engine. The safe consist length information is composed of the six following values: a)        The nominal, min safe and max safe consist lengths in front of the engine, counted from the front end of the engine b)        The nominal, min safe and max safe consist lengths in rear of the engine, counted from the front end of the engine Note: The difference between the min and max safe consist length is related to what is called coupling play and/or to any other uncertainties in the consist length information. It allows to deduce the overall length between the two extremities of a train whose movements can be supervised by the ERTMS/ETCS on-board equipment: a)     In SM mode, regardless whether there are vehicles in front of the engine b)     In modes where availability of valid Train Data is necessary, in case there is no vehicle in front of the engine