1981 Bedford TK PWV74X, formerly East Sussex Fire amp; Rescue Service's Fire Safety Exhibition Unit/Chemical Incident Unit, in a different guise as a mobile hair dressing salon when seen at Hellingly in August 2011. (Chris Stanley)br/br/emKen Reid writes/em ... It's not an emergency vehicle, or even a preserved emergency vehicle, so technically it should not be displaying blue lights on the public highway, even if they don't work.