2011 Acura RL Owner's Manual - Page 334

Adaptive Cruise Control (ACC) Changing Vehicle Distance U.S. DISTANCE BUTTON To change the range, press the DISTANCE button. Each time you press the button, the range changes from Long, to Middle, and then to Short. The higher your vehicle speed is, the longer the distance between the vehicle in front will be set as shown below. Speed Vehicle Distance Long Middle Short 50 mph (80 km/h) 154 feet 47 meters 111 feet 34 meters 85 feet 26 meters 65 mph (104 km/h) 200 feet 61 meters 138 feet 42 meters 101 feet 31 meters Canada When that vehicle changes lanes or goes out of ACC range, a beeper sounds once. If there is no vehicle ahead of you within ACC range, a dotted-line vehicle icon will be on the multi-information display. To set the ACC beeper on or off, see page 90 . With ACC on, the distance between your vehicle and the vehicle ahead of you is controlled and maintained. You can change this distance to one of three ranges: long, middle, or short. 328