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Vehicle Dynamics and Driver Assist Systems
May 2017
Blind Spot Detection (BSD) / Rear Cross Trafc Alert
(RCTA)
Introduced on some 2015 Legacy and Outback models, the Blind Spot Detection (BSD)/
Rear Cross Traffic Alert (RCTA) system offers three functions. Blind Spot Detection detects
vehicles on either side of the vehicle, in the driver’s blind spots. Lane Change Assist detects
fast-approaching vehicles in adjacent lanes, and Rear Cross Traffic Alert detects vehicles
approaching from a perpendicular direction while reversing, such as from a driveway. LED
indicators on the side mirrors alert the driver. Rear Cross Traffic Alert uses an indicator in the
rear view camera display.
Note: Beginning with all 2016MY vehicles, the “Subaru Rear Vehicle Detection (SRVD)
system” name has been changed to “Blind Spot Detection (BSD) / Rear Cross
Traffic Alert (RCTA) System”. System functions have remained the same despite
the name change.
Basic Operation
Blind Spot Detection (BSD)
Blind Spot Detection (BSD) notifies the driver of vehicles traveling at a similar rate of speed in
neighboring lanes behind the C or D pillars by illuminating an LED indicator in the side mirror.
The detection area for BSD is approximately 23 ft from the rear bumper cover.
Note: If the driver attempts to change lanes by enabling the turn signal while a vehicle
is in the vehicle’s blind spot, a flashing LED indicator in the side mirror will alert
the driver to the potential hazard.
7m(23ft)
0.5m
(1.6ft)
3.8m(12.5ft)
1m(3.3ft)
BSD
BSD Detection Area
6-2
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