The AEC Regent III RT was one of the variants of the AEC Regent III. It was a double-decker bus produced jointly between AEC and London Transport. It was the standard red London bus in the 1950s and continued to outnumber the better-known Routemaster throughout the 1960s.

The AEC RT was one of the variants of the AEC Regent III and was a double-decker bus produced jointly between AEC and London Transport 1. It was the standard red London bus in the 1950s and continued to outnumber the better-known Routemaster throughout the 1960s 1 .

Designed jointly by London Transport and AEC, the RT – with its advanced, streamlined styling, bright interior, comfortable seating, smooth new diesel engine, air-brakes and pre-selector gearbox – set new standards for the bus industry as a whole and confirmed London’s place at the forefront of bus design.

The RTL class were modified to carry bodies identical to the RT, whilst the 500 members of the RTW class were London's first eight-feet wide double-deckers, in later years proving useful in training Routemaster drivers.

The AEC Regent III (also known as Regent 3 or Regent Mark III) was a type of double-decker bus chassis manufactured by AEC. The Regent III was mainly built for operation outside London and overseas.

The RT type bus formed London’s largest ever standardised bus fleet. Introduced in 1939, it served London for 40 years. Its mass production was delayed by the Second World War. This vehicle in our collection, RT4712, is typical of its type apart from its distinctive livery. It was painted gold for the Queen’s Golden Jubilee in 2002.

2012年12月27日 · Doing so was a big fad in the seventies and eighties, when London Transport was phasing out their mainstay buses, the AEC Regent III RT series. Some 4,674 were built; a few of them just before the war, but mostly after. It was the most common London bus until the arrival of the famous and more familiar Routemaster, in 1954.

Engine : AEC 9.6 litre type A185; Gearbox : Four speed, air operated pre-selective; Body : LPTB; Capacity : 56 seats; Vehicle classification: RT - It has never been firmly established what this stands for – Regent Type and Revised Type are unlikely – and it may just have been the next code to be used in AEC’s development department.

The London Transport RT bus (a version of the standard AEC Regent III) was designed in the late 1930s by collaboration between London Transport Chiswick Works and AEC. Although the later Routemaster is the model that has lived on longest in the affections of the public, the RT could be described as the ‘father’ of the Routemaster, being its ...

Engine: 9.6 litre 6-cylinder AEC diesel, bore 4.72", stroke 5.59" developing 115 B.H.P. at 1800 RPM. Transmission: Four speed air operated 'Wilson' pre-selector epicyclic gearbox to a worm drive differential. Brakes: Air operated foot brake to all wheels and a mechanical hand brake to the rear wheels. RT 3708 at Lilyfield. Liam Brundle.