FIA Formula 2 and Formula 3 Championships currently use 6-speed sequential gearboxes with electro-hydraulic operation via shift paddles. Manual control of the multi-plate clutch systems via a lever behind the steering wheel is used to launch the cars. DTM currently uses a Hewland DTT-200 6-speed sequential transmission with steering-wheel-mounted shift paddles, which was introduced for the 2012 season with the new rule change. This new system replaced the older lever-shifted sequential transmission, which had been used for the previous 12 seasons (since 2000). Usage in other vehicles Other notable uses for semi-automatic transmissions include: During the 1940s to 1960s, many small diesel shunting locomotives used epicyclic semi-automatic transmissions. For example, the British Rail Class 03 and British Rail Class 04 used the Wilson-Drewry CA5 R7 transmission. The Sinclair S.S.S. Powerflow, used from the 1950s to the early 1960s in Huwood-Hudswell diesel mining locomotives, the British Rail Class D2/7 and the British Rail Class D2/12. The Powerflow design is of the layshaft type with constant-mesh gears and dog clutch engagement, allowing it to provide seamless power delivery during upshifts. This transmission was also used in some road vehicles. The Self-Changing Gears Pneumocyclic, an epicyclic transmission built in the United Kingdom from the 1960s to the 1980s. Using a similar design to the company's previous preselector gearboxes, the Pneumocyclic transmission was used in several buses, such as the Leyland Leopard, Panther, and Tiger. It was also fitted to several thousand British diesel railcars during this time. All-terrain vehicles, such as the Honda ATC185, Honda ATC200, Honda TRX90X and TRX250X (Honda SportClutch), Suzuki LT125D Quadrunner (also known as the Suzuki QuadRunner 125), Suzuki LT 230, Suzuki Eiger 400, Yamaha Big Bear 250, 350, and 400, Yamaha Grizzly 80, Yamaha Raptor 80, Yamaha YFB250 Timberwolf, the Yamaha Moto-4 ATV range, and the Yamaha Tri-Moto range. The Honda Electric Shift Program is used in ATVs such as the 1998 Honda TRX450FE (also called the Foreman 450ES ESP) and first-generation Honda Rincon. Shifting is accomplished by pressing one of the two gear selector arrows on the left handlebar, which activates an electric shifting system. See also Automated manual transmission (AMT) Automatic transmission (AT) Dual-clutch transmission (DCT) Manumatic Shift time References Automotive transmission technologies Automobile transmissions Motorcycle transmissions Mechanical power control