BMW HP4 Rider's Manual page 121

If a fault message is issued on
account of exceptional riding
conditions as outlined above, you
can reactivate the ABS function
by switching the ignition off and
on again.
What significance
devolves on regular
maintenance?
Invariably, a technical sys-
tem cannot perform beyond
the abilities dictated by its level
of maintenance.
In order to ensure that the
BMW Motorrad Race ABS is
always maintained in optimum
condition, it is essential for you to
comply strictly with the specified
inspection intervals.
Reserves for safety
The potentially shorter braking
distances which BMW Motorrad
Race ABS permits must not be
used as an excuse for careless
riding. ABS is primarily a means
of ensuring a safety margin in
genuine emergencies.
Take care when cornering! When
you apply the brakes on a corner,
the motorcycle's weight and
momentum take over and even
BMW Motorrad Race ABS is un-
able to counteract their effects.
Evolution of Race ABS to
ABS Pro
OA
with ABS Pro
Until now, the BMW Motorrad
Race ABS of the HP4 helped
ensure a very high degree of
safety for braking with the mo-
torcycle upright and travelling
in a straight line. Now ABS Pro
offers enhanced safety for brak-
ing in corners as well. ABS Pro
prevents the wheels from lock-
ing even under sharp braking.
ABS Pro reduces abrupt changes
in steering force, particularly in
panic-braking situations, coun-
teracting the vehicle's otherwise
natural but undesirable tendency
to straighten up.
ABS intervention
Technically speaking, depending
on the riding situation ABS Pro
adapts ABS intervention to the
motorcycle's bank angle. Signals
for rate of roll and rate of yaw
and lateral acceleration are used
to calculate bank angle. These
signals come from the angular
rate sensor, an integral compon-
ent of Dynamic Traction Con-
trol DTC and Dynamic Damping
Control DDC.
As the motorcycle is heeled over
more and more as it banks into
a corner, an increasingly strict
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