The holding brake was also turned off, and has not been used since.
The standard brakes can be used in addition as necessary.
When cars were first made, they used just rear brakes.
Drum brakes were used at both the front and the rear.
However, the holding brake has not been used since September 2008 due to maintenance issues.
It was impossible to keep the car to thirty going down the hill without using brakes.
Modern trains use brakes in various forms based on this design.
These brakes are typically used on or near an electric motor.
In nine other cases in the same study, the brakes were used only at the last moment before impact.
Both sets of hybrids also save energy that is usually lost when the brakes are used.