PREVOST X3-45 VIP 2017, Owner'S Manual

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Other Features 5-24
surface. Locked wheels also impede directional
control and cause severe tire abrasion. An
antilock braking system provides maximum
braking performance while maintaining adequate
control on slippery roads.
The basis of ABS is constant monitoring of
wheel parameters during braking. Sensors on
each wheel of the front and drive axles
constantly measure wheel speed during braking.
This information is transmitted to a four-channel
electronic processor which senses when any
wheel is about to lock. Modulating valves quickly
adjust brake pressure (up to 5 times every
second) to prevent wheel lock. Each wheel is
therefore controlled according to the available
grip.
In this way, the vehicle is brought to a stop in the
shortest possible time while remaining stable
and under the driver's control.
CAUTION
Vehicles following ABS-equipped vehicles may
not be able to brake as fast on slippery roads.
Whenever possible, warn other drivers by
depressing the brake pedal lightly several
times before braking.
In addition to the ABS function, advanced
models of Bendix controllers provide an
Automatic Traction Control (ATC) feature.
Bendix ATC can improve vehicle traction during
acceleration, and lateral
stability while
accelerating through curves. ATC utilizes
Engine Torque Limiting (ETL) where the ECU
communicates with the engine’s controller and/or
Differential Braking (DB) where individual
wheel brake applications are used to improve
vehicle traction.
Advanced models of Bendix controllers also
provide ABS-based stability features referred to
as
ESC

Electronic Stability Control .
The Bendix ESC system is an ABS-based
stability system that enhances vehicle stability by
both reducing engine throttle and by applying
vehicle braking based on actual vehicle
dynamics. Accordingly, the ESC system is
available only on specific approved vehicle
platforms after vehicle application and
development efforts and validation testing. Only
certain limited variations of an approved vehicle
platform are permitted without further validation
of the ESC system application.
DANGER
In the case where a vehicle equipped with the
ESC system pulls a trailer, the latter must be
equipped with ABS.
ESC stability system consists of Yaw Control
(YC) and Roll Stability Program (RSP) features.
CAUTION
Even with ESC-equipped vehicles, the driver
remains responsible for ensuring vehicle
stability during operation.