at a 20percent greater speed than it otherwise would be able to do so. The active tilting mechanism is achieved using electrically operated tilt activators, which are situated under each carriage. Unlike some alternative systems, which are pre-programmed to tilt at sections of a pre-determined route, the Pendolino's tilt system actively detects the upcoming corners using sensors and tilts appropriately to correspond. As tilting may not be appropriate or possible at some locations along the route, such as when travelling close to bridges and tunnels, the tilt mechanism can be disabled by an onboard system, called the Tilt Authorisation and Speed Supervision (TASS). This system relies upon trackside beacons, which are typically spaced around five miles from one another, to transmit data to the train; this information, as well as temporarily locking-out the tilting mechanism from being used on relevant stretches of track, also relays the maximum permissible speeds for the adjacent corners. Safety The Pendolino incorporates several different onboard safety systems, including the Automatic Warning System (AWS) and the Train Protection Warning System (TPWS); it was also planned to install compatible equipment for the European Train Control System (ETCS). These systems automatically deliver situational warnings regarding the relevant signals and speed limits to the driver and, if not reacted to appropriately, are able to bring the train to a complete halt. Unlike most trains, it also features a Tilt Authorisation and Speed Supervision (TASS) system, which is used to control the onboard tilting mechanism. In the event of an accident, each Pendolino also incorporates a black box data recorder; another structural measure, designed to help dissipate the forces involved in an incident involving a severe collision, are the crush zones, which can reportedly absorb three times the forces of existing High Speed Trains. The Pendolino features relatively shallow windows in comparison to trains such as the Voyager; visually, the windows are linked by a black livery line to form a continuous band running along the length of the train. A combination of structural constraints and internal configuration selections had determined the narrowness of the windows; the adoption of larger windows would have intrinsically weakened the bodyshell of each carriage. Reportedly, consideration was given to the adoption of asymmetric window layout during the design process, but this was ultimately discarded in favour of the arrangement used in service instead. Due to these design choices, the Pendolino has a very high