London Transport's 1966 'reshaping plan' called for the elimination of all crew operated routes and and their replacement by one person operated high capacity single deckers. In order to speed up boarding times many of the new vehicles were fitted with Automatic Fare Collection (AFC) machines. Passengers having the correct fare could use the machines thus avoiding the queue to pay the driver. Unfortunately the equipment proved to be unreliable in service and was mistrusted and little used by passengers. Consequently the system was abandoned in 1979. 4 ex-LT buses from this era are preserved complete with AFC equipment, they are DMS 1/132, MBA 582 and SMS 369