Acura RLX 2017 Owner's Manual page 371

uuWhen DrivinguAdaptive Cruise Control (ACC) with Low Speed Follow (LSF)
The higher your vehicle's following-speed is, the longer the short, middle, long or
extra long following-distance becomes. See the following examples for your
reference.
Following-distance
Short
Middle
Long
Extra
Long
When your vehicle stops automatically because a vehicle detected ahead of you has
stopped, the interval between the two vehicles will vary based on the ACC with LSF
interval setting.
370
When the Set Speed is:
50 mph (80 km/h) 65 mph (104 km/h)
83 feet
25 meters
1.1 sec
110 feet
33 meters
1.5 sec
154 feet
47 meters
2.1 sec
204 feet
62 meters
2.8 sec
*
100 feet
31 meters
1.1 sec
137 feet
42 meters
1.5 sec
200 feet
61 meters
2.1 sec
265 feet
81 meters
2.8 sec