Although almost every light vehicle with an automatic transmission already is equipped to prevent shifting out of park without accompanying depression of the brake pedal, NHTSA (National Highway Traffic Safety Administration) is proposing a rule to that effect. The rule would require 100% compliance by Sept. 1, 2010, the same compliance date in a voluntary agreement for “brake transmission shift interlock” developed by the Alliance of Automobile Manufacturers and signed by nearly every carmaker. The rule comes as a directive of Congress (Cameron Gulbransen Kids Transportation Safety Act of 2007) and will be incorporated into Federal Motor Vehicle Safety Standard 114. The rule would apply to all vehicles (except motorcycles and trailers) with a gross vehicle weight rating of 10,000 lb or less. Comments on the proposal are due to NHTSA by Sept. 24.