Following Distance Alert; Impact Alert; Brake Overuse Warning - PREVOST H3-45 VIP Owner's Manual

4-64 Controls and Instruments
WARNING
Active interventions of ACB to maintain safe following distance (throttle reduction, engine brake/retarder
application, service brakes application) are only operational when the ACB is engaged with a cruise speed set.

BRAKE OVERUSE WARNING

ACB provides a warning when the system is intervening and using the service brakes excessively. Overuse of
the foundation brakes can lead to the brakes overheating and a potential loss of braking performance from brake
fade. For example, the use of ACB on downhill runs may cause this alert to be activated. It is recommended that
ACB be disengaged on downhill grades. The driver should use appropriate gearing and brake techniques, and
not rely on ACB, on downhill grades.
If the driver does not respond to the Brake Overuse Warning after a brief delay, the ACB will switch off.
CONDITION
ACTIONS BY ACB
SYSTEM
SITUATION
ACTIONS BY ACB
SYSTEM

FOLLOWING DISTANCE ALERT

The Following Distance Alert feature is only available when the coach speed is
greater than 36 mph (58 km/h), whether or not ACB is engaged.
The forward vehicle is slowing down and the distance between your vehicle the coach
and the forward vehicle is less than the set distance.
"Distance Alert" pop-up message appears on the
DID
The speedometer LEDs illuminate in red
If the vehicles remain to close from each other for
more than 15 seconds, an audible warning will
sound (beeping)

IMPACT ALERT

ACB system detects a risk of collision with a forward-moving vehicle or a stationary
metallic object in your lane of travel.
On the dashboard, the Forward Vehicle Detected telltale
flashes in red
"Impact Alert" pop-up message appears on the DID
The speedometer LEDs flash in red
An audible warning will sound (continuous modulating
tone)
PA-1619 Owner's Manual H3-45 VIP