21 BW8207 Bendix Global Scalable Brake Control (GSBC) System Operator’s Manual
BENDIX GSBC SYSTEM FEATURES CONT.
YAW CONTROL
Yaw control is a feature on vehicles equipped with Bendix® Electronic Stability
Program (ESP®) that reduces the risk of jackkning and other loss-of-control situations.
If a vehicle’s tires start to slide during a turn, yaw control counteracts the tendency
of that vehicle to spin (or “yaw”), thereby mitigating a potential jackknife or other
loss-of-control situation. Many factors – including road conditions, load distribution,
and driving behavior – can contribute to the development of a vehicle spin.
Vehicle spins typically occur where either: (a) the rear wheels begin to lose their
grip on the road – which could lead to a jackknife when towing a trailer; or, (b) the
front wheels begin to lose their grip, reducing a vehicle’s ability to respond to the
driver’s steering inputs.
Yaw control continually monitors the direction in which you are steering the vehicle as
well as the vehicle’s response to those steering inputs. If the system detects that the
vehicle is beginning to spin, yaw control reduces the engine throttle, uses selective
braking at the four (4) corners of the vehicle – and may also use trailer braking – to
help you keep the vehicle under control.
During a yaw control intervention, the vehicle automatically decelerates. Yaw control
can slow the vehicle with or without you applying the brake, and even when you
are applying the throttle.
A: Tractor/Trailer B: Transit Bus C: School Bus
Driving Scenario: Excessive speed exceeds the
threshold, creating a situation where a vehicle is
likely to spin and jackknife.
Yaw Control Intervention: The yaw control
feature reduces engine throttle and selectively
applies brakes to reduce the tendency to jackknife.
B
A
B
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