freightliner cascadia Driver Manual page 85

Driver Assistance Features
ESC works by constantly comparing the driver's in-
tention with the vehicle's actual behavior. The system
does this by monitoring systems such as wheel
speed, steering angle, yaw rate, lateral acceleration,
throttle position, and brake application. A central mi-
crocomputer analyzes the collected data and triggers
a response to keep the vehicle on course when an
unstable condition is detected.
When the system detects that the vehicle is at risk of
oversteering or understeering, it applies individual
tractor wheel end brakes and trailer brakes, activates
the engine retarder (if equipped), and/or cuts engine
power, depending on the severity. As a result, the
driver has full control over the vehicle until the sys-
tem detects a potential risk and intervenes accord-
ingly. ESC operates automatically; the driver does
not monitor or activate the system.
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