 They can be regularly seen on the strategic motorway network surrounding the airport, the perimeter roads and also on the terminal forecourts where, along with enforcing the road traffic regulations and assisting the free flow of vehicles, they undertake a highly visible public reassurance counter-terrorism role.This small group of highly specialised officers have led the implementation of new legislation, the Railway & Transport Safety Act to regulate drink flying offences in the UK.Seen as being particularly controversial, information about a suspected offence is normally received from either the airline or airport security personnel.