User's Manual

Chassis Systems Control
From
Our Reference
XC-DA/ESR1
Robert Binder
FR5TPCC User Manual
Issue
2.0
for Radio International Type Approval
01-December-2021
Page 4 of 16
With its predictive emergency braking system, Bosch is helping to prevent rear-end collisions
and reduce the severity of accidents. The system becomes active as soon as the vehicle
started, and supports the driver at all speeds – both day and night.
If the predictive emergency braking system determines that the distance to the preceding
vehicle is becoming critical short, it prepares the braking system for potential emergency
braking. If the driver does not react to the hazardous situation, the system warns the driver via
an audible and/or visual signal, followed by a short but noticeable brake jerk.
The system then initiates partial braking to reduce the speed and give the driver valuable time to
react. As soon as the driver presses the brake pedal, the system provides braking support. To
do this, the system continuously calculates the degree of vehicle deceleration required to avoid
the collision. If the system detects that the driver has failed to apply sufficient brake force, it
increases the braking pressure to the required level so that the driver can attempt to bring the
vehicle to a standstill before a collision occurs.
If the driver fails to react to the immediate risk of collision, and the predictive emergency braking
system detects that a rear-end-collision is unavoidable, it can – working conjunction with a video
camera – automatically initiate full braking. As a result, the vehicle is traveling at significantly
reduced speed when the collusion occurs, reducing the severity of the crash for the passengers
of both vehicles.
If the predictive emergency braking system detects that the distance to a moving or stationary
vehicle in front is becoming critically short, it prepares the braking system for a potential
emergency braking procedure. If the driver fails to react to the critical situation, the system can
automatically initiate full braking in an attempt to prevent the collision. If the rear-end collision is
unavoidable, this action can at least minimize the severity of the collision, reducing the risk of
injury to the passengers of both vehicles.
3.2.2 Adaptive cruise control (ACC)
The FR5TPCC makes it possible to detect vehicles merging at an early stage – making it the
ideal extension of front radar for ACC systems.
The ACC system automatically maintains a set distance from the vehicle ahead by automatically
reducing the power to the engine, braking or accelerating. The ACC stop & go variant can also
automatically apply the brakes until the vehicle comes to a standstill and will resume
automatically when instructed by the driver.