Auto Transmission Shift Interlocks Required to Prevent Vehicle Rollaways


New cars with automatic transmissions must now be equipped with an interlock device that requires the brake pedal be pressed before the driver can shift the transmission out of “park."

The National Highway Traffic Safety Administration took the action in response to a law passed in 2008 designed to protect children from vehicle rollaways in which a car is inadvertently shifted into neutral or another gear.

The new requirement applies to all passenger cars and light trucks weighing 10,000 lbs. or less and takes effect on September 1, 2010.

Questions may be directed to Stuart Gosswein at