Subaru Outback 2011 Owner's Manual page 265

6-24
Interior equipment
! Feature of distance marker
1) 1 m (3 feet) line
2) 2 m (6.5 feet) line
3) 3 m (10 feet) line
The distance marker shows the distance
on the road. If there is a car or other object
close behind, distance cannot be correctly
displayed.