hill hold

A hill-holder is a motor vehicle device that holds the brake until the clutch is at the friction point, making it easier for a stationary vehicle to start uphill. By holding the brake in position while the vehicle is put into gear, it prevents rollback. The hill-holder was invented by Wagner Electric and manufactured by Bendix Brake Company in South Bend, Indiana.
It was first introduced in 1936 as an option for the Studebaker President. By 1937 the device, called "NoRoL" by Bendix, was available on Hudson, Nash and many other cars. Studebaker and many other carmakers offered the device as either optional or standard equipment for many years. In modern usage, this driver-assistance system is also called hill-hold control (HHC), hill-start assist (HSA) or hill-start assist control (HAC).

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