2022 BMW Motorrad R 18 Transcontinental — Owner's Manual – Page #126

Posted on 26 Apr, 2022
Model: 2022 BMW Motorrad R 18 Transcontinental
Pages: 213
File size: 8 MB

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What is ACC?
with Active Cruise Control
BMW Motorrad ACC is adaptive cruise con-
trol with distance control. The function en-
ables the rider to specify a desired speed
and desired distance from the vehicle in
front. This speed is maintained automat-
ically as long as the distance to motorists
and cyclists in front does not fall below the
distance selected by the rider. If it is under-
shot, the speed is reduced until the desired
distance is reached again.
The rider is still in charge and can intervene
at any time and overrule ACC.
The ACC function has two characteristics:
Comfortable and Dynamic. They influ-
ence the acceleration and deceleration be-
havior when control is activated.
How does ACC work?
with Active Cruise Control
Objects in front are detected by the front
radar sensor. At the same time, the radar
sensor uses the yaw rate and vehicle speed
to determine the driving path, i.e. the corri-
dor in which the motorcycle will move in the
next Approx. 328.1 ft (Approx. 100 m). If
one of the detected objects is located in the
driving path, a response is triggered and the
speed is adjusted to ensure that the desired
distance to the object is achieved.
Control functions of ACC
with Active Cruise Control
ACC control is divided into the three follow-
ing control functions:
Cruise control: The speed stored by the
rider is adjusted.
Distance control: The speed stored by the
rider is adjusted while taking into account
the distance to the vehicles in front.
Curve control: When riding around curves,
the speed is also reduced as necessary
and the function aims to achieve a com-
fortable angle (e.g. 20°). In addition, the
braking and acceleration dynamics are
limited as the angle increases so that the
rider is not surprised by sudden braking
or acceleration maneuvers. For example,
curve control prevents unexpected accel-
eration when an object is lost and the se-
lected speed is too high. An object can be
lost if the vehicle in front is only detected
by the radar to a limited extent when it is
traveling around the curve.
Speed range of ACC
The ACC function can be activated in the
following speed ranges:
19...99 mph (30...160 km/h)
If ACC is activated in the 99...155 mph
(160...250 km/h) speed range, the maxi-
mum speed of 99 mph (160 km/h) is se-
Limits of ACC
with Active Cruise Control
ACC is subject to the system limits
described below:
Detected objects: The object detection
of the radar sensor is limited to vehicles
driving in front.
Radar range: The radar has a maximum
field of vision of Approx. 393.7 ft (Approx.
120 m). At high speeds and with dynamic
movement of the rider's vehicle, e.g. when
changing lanes, object detection may be
Adjacent lane interference and loss of
objects: In case of an unsteady riding
style, curvy roads or offset driving within a
lane, detected vehicles may occasionally be
assigned to the wrong lane. The distance
control is then applied to the wrong vehi-
cle, which can lead to unexpected braking
or acceleration. Due to the system-side
limitation of vehicle acceleration and de-
celeration, handling always remains man-
ageable for the rider.
Limitation of riding dynamics: Accelera-
tion or deceleration of the motorcycle con-
trolled by ACC is limited. The increase in
acceleration or deceleration is also limited.
This prevents a sudden, significant change
in acceleration or deceleration. This limi-
tation is further limited as the angle of the
motorcycle increases. In case of very steep
inclines and a heavy load, it is possible that

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