(1955, British Pathe)

At London Transport's works at Aldenham, buses are subjected to various safety tests before being allowed onto the streets. RTL286 (KGU244) is seen undergoing tilt testing:

The rig is operated by foreman Charlie Taylor who's been working on bus maintenance since 1927. At Chiswick Works, a roofbox AEC RT is tested on the skid pan; a number of other buses are seen in the background: