Acura 2012 ZDX Owner's Manual page 242

uuWhen DrivinguACC (Adaptive Cruise Control)
■
To Change Vehicle Distance
Distance
Button
The faster you select the set speed, the longer the short, middle or long distance
becomes. See the following examples for your reference.
Vehicle
Distance
Short
Middle
Long
240
*
Press the (distance) button to change ACC
range.
Each time you press the button, the ACC
range for the distance between your vehicle
and the vehicle ahead of you changes to
short, middle and long.
When the Set Speed is:
50 mph (80 km/h)
85 feet
26 meters
111 feet
34 meters
154 feet
47 meters
65 mph (104 km/h)
101 feet
31 meters
173 feet
53 meters
200 feet
61 meters