shuttles, the attendants ride in the passenger carriage at the front of the train with the truck drivers; in the passenger vehicle shuttles, they patrol the train. The trains are also long enough so that no matter where in the tunnel, the length of the train spans two evacuation doors into the service tunnel adjacent to the rail tunnels. Passenger vehicle carriages are sealed off with fireproof doors and are pressurised. These doors are closed once all vehicles are loaded. They include smaller pedestrian doors that may be opened when the train is in motion to move from one carriage to the next but then close automatically. Eurotunnel has been criticised for failing to implement measures to prevent or extinguish fires in the open-framed large-goods-vehicle-carrying wagons; recommendations made by the Fire Brigade Union in 1996 following a fire in the Channel Tunnel – that closed wagons should be used to prevent the spread of fire – were not acted upon. Newer safety regulations have been tightened and relaxed. For one, trains are no longer required to have a locomotive at each end, just a driving cab at each end, as a rescue locomotive could assist a stricken train and the train does not need to split into sections. On the other hand, to stop the spread of fires, the formerly full lattice steel freight shuttle wagons now only cover the cab, and checks are carried out at each end of the tunnel to stop the risk of another fire happening in the future. Event On 23 August 2022, an alarm went off in a shuttle to Folkestone, leading to a controlled stop and inspection about half way inside the Chunnel. Dozens of people were left stranded in hours waiting for evacuation through the service tunnel before they could rejoin their vehicles. References External links Channel Tunnel Car shuttle trains