Subaru 2001 Impreza Owner's Manual page 163

Interior equipment
NOTE
D When setting is completed, all blinking disappears.
D The setting mode is automatically cancelled if the "ADJ"
switch is pressed in the middle of setting or if the setting is not
completed within 2 minutes.
The motion indicator bars move in two patterns according to the
vehicle speed.
HS6012BB
1. 1.8 mile/h (2.8 km/h) of vehicle speed ... 1 second interval bar
motion.
2. 12.5 mile/h (20 km/h) or more of vehicle speed ... 0.5 second inter-
val bar motion.
NOTE
D When the vehicle stops, the motion indicator bars will return to
their original position.
D When the vehicle is driven in reverse, the motion bars move in
the same pattern as when driving forward.
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