On lift trucks with internal combustion (gasoline, liquid propane, diesel) engines it is necessary to rev the engine in order to get the power needed to lift a load with the hydraulics. An inching pedal acts like a combination of a clutch pedal and brake pedal. When slightly depressed, it puts the transmission in neutral allowing the operator to rev the engine. When completely depressed it engages the brakes. An inching pedal may be a separate pedal from the brake pedal or be part of the main brake pedal.