NISSAN 2014 Quest - Owner's Manual - Manual (Page 365)

5-22 Starting and driving
SSD1034
If the driver activates the turn signal while
another vehicle is in the detection zone, then
the BSW indicator light flashes and a chime will
sound twice.
SSD1036
NOTE:
When overtaking several vehicles in a row,
the vehicles after the first vehicle may not
be detected if they are traveling close
together.