2011 Acura RL Owner's Manual - Page 329

Adaptive Cruise Control (ACC) Limitations ACC does not work below 25 mph (40 km/h). It cannot bring your vehicle to a complete stop. ACC will not sound a beeper or display a message on the multiinformation display to warn you of vehicles going slower than 13 mph (20 km/h) or vehicles that are parked. In these cases, it is up to you to maintain a safe distance by using the brake pedal. ACC may not recognize motorcycles or other small vehicles ahead of your vehicle. ACC may react to vehicles beside you or even a building beside you by momentarily applying the brakes or sounding a beeper under conditions such as a sudden curve or narrowing of the road, an abrupt movement of the steering wheel, or if you are in an unusual position within your lane. Features 323