The AA was formed in 1905 famously meeting in the Trocadero Restaurant in London. Membership of the organisation grew rapidly and five years later they had patrols across the country. Initially the cycle scouts were employed at weekends to advise members of police traps ahead, but this soon changed as they began helping stranded motorists. In the late 1940's the introduction of two-way radio transformed the organisation as they were able to be contacted centrally to attend a members vehicle. This trailer comes in their signature yellow and would have been used at publicity events around the country.