The 2009 Acura RL scores five stars in all safety tests from NHTSA (National Highway Traffic Safety Administration) and earns a Top Safety Pick rating from the IIHS (Insurance Institute for Highway Safety).
According to MotherProof, "The 2009 RL is packed with enough safety features to please even the most protective mommies," noting the full array of airbags and active head restraints.
A safety system impossible to ignore is Acura's Collision Mitigation Braking System. Mounted inside the front grille, CMBS detects potential rear-end collisions, warns the driver, and initiates automatic braking, monitoring vehicles ahead through its use of millimeter-wave radar technology.
CMBS also includes adaptive cruise control (ACC), which adjusts speed and distance to the preceding vehicle.
Car and Driver noted that the RL flashes a warning when a car is quickly approaching, and that if the driver doesn't respond it yanks the seatbelt and slams on the brakes. That's all good, they wrote, but it was too eager in slow traffic and the reviewers eventually had to disable the system.
Edmunds took a different approach and said the system could help an incapacitated driver, and that only chronic tailgaters would have a problem with the system being too eager on the road.