Mazda CX-9 2016 Owner's Manual page 248

When Driving
i-ACTIVSENSE
Distance-between-vehicles guidelines
Indication on display
4–100
*1
Distance between vehicles
guidelines
(During travel at about 40km/h
(25 mph))
About 25 m (82 ft)
About 20 m (66 ft)
About 17 m (56 ft)
About 14 m (46 ft)
Distance between vehicles
guidelines
(During travel at about 80km/h
(50 mph))
About 50 m (164 ft)
About 40 m (131 ft)
About 30 m (98 ft)
About 20 m (66 ft)