BMW Motorrad R 1250RT, Rider'S Manual

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196 ENGINEERING DETAILS
ADAPTIVE CORNERING
LIGHT
with adaptive head light
OE
How does the adaptive
cornering headlight work?
The low-beam unit installed
as standard in the headlight
consists of two reflectors that
produce a low beam from
an LED light source. Ride
height sensors on front and
rear suspension supply data
for permanent beam throw
adjustment. While the motor-
cycle is moving straight ahead,
pitch compensation keeps the
throw of the headlight beam
constantly in the optimum,
preset range, regardless of
ride and load state. With the
Adaptive headlight function, the
low-beam unit is additionally
rotated about an axis to a
degree that varies with the
bank angle, compensating for
the vehicle's angle of lean. The
angle of rotation is 70° (±35°).
Along with pitch compensa-
tion, therefore, the throw of the
low-beam headlight also com-
pensates for the rider's chosen
bank angle through corners.
The two movements are super-
imposed, so as the motorcycle
is steered through a bend the
headlight beam is directed into
the bend for better illumination
of the road ahead. The results
are considerably better illumin-
ation of the road ahead when
the motorcycle corners, and a
huge increase in active riding
safety.