Turning The Acb System On; Turning Off The Acb System; Maintaining A Set Following Distance - PREVOST H3-45 VIP Owner's Manual

WARNING
Even with ACB, the driver must remain alert, react
appropriately and in a timely manner, and use good
driving practices. Ultimate responsibility for the
safe operation of the vehicle remains with the
driver at all times.
Be certain that you have read all safety warnings
found in Bendix Wingman ACB Active Cruise with
Braking Operator's Manual.
The driver will benefit all the audible and visual
warnings that the system provides whether or not
ACB is turned on. In addition to the audible and
visual warnings, when the ACB is turned on and a
cruise speed is set, the driver benefits from active
interventions like engine throttle reduction,engine
brake application and service brake application to
help maintain a set following distance.
WARNING
Adaptive Cruise Braking must be used only in the
same conditions that are normally recommended
for ordinary cruise control. Refer to "Regular Cruise
Control" paragraph.

TURNING THE ACB SYSTEM ON

Activation of the adaptive cruise braking is similar to
the regular cruise control activation. Press the
CRUISE rocker switch to the ON position,
accelerate the vehicle to the desired cruising speed
and then, press the SET button. ACB is now
engaged with the set following distance and driver
warning features. Whenever the cruise control is
engaged, the ACB is also engaged. You cannot use
the cruise control without the ACB features.

TURNING OFF THE ACB SYSTEM

You can turn off the ACB system, simply by applying
service brakes, setting the CRUISE rocker switch to
the OFF position or pressing the cruise control
CANCEL button on the steering wheel.
NOTE
Whenever the service brakes are applied by
intervention of the ACB or by the driver, normal
cruise will automatically be canceled. The driver
must resume or set the cruise mode in order for the
vehicle to throttle up.

MAINTAINING A SET FOLLOWING DISTANCE

Using a radar sensor mounted to the front bumper,
the ACB system measures the distance between the
coach and the forward vehicle and intervenes to help
maintain a safe set following distance behind the
vehicle. This feature engages automatically once the
driver turns on and sets cruise speed.
Following distance refers to the time gap, measured
in seconds, between the coach and the vehicle
ahead. The actual physical distance between the
coach and the vehicle ahead will vary based on your
set cruise speed; although the set time gap remains
the same for all set cruise speeds. Prevost's default
set time gap is 1.7 seconds.
With cruise control engaged and a cruise speed set,
you are maintaining a set following distance between
the coach and the forward vehicle:
The driver must apply additional braking power when
required, to avoid collision or to maintain a safe
distance from the vehicle ahead.
NOTE
If the ACB is actively decelerating or braking the
coach in an attempt to maintain the set following
distance at the moment when the driver cancels
the ACB system, the ACB system will continue
deceleration or braking intervention until a safe
following distance is established, then will cancel.
Even though the cruise control doesn't operate at
speeds below 30 mph (50 km/h), the ACB system
will continue deceleration or braking intervention in
an attempt to maintain the set following distance if
the coach speed reduces to less than 30 mph (50
km/h).
PA-1638 Owner's Manual X3-45 VIP
Controls and Instruments 4-47
If the vehicle in front of the coach slows down
l
below your cruise control set speed, the
system will progressively
follows, in this order:
1. Reduce the engine throttle;
2. Apply the engine brake;
3. Apply about 30% of the service
brakes available braking power in an
attempt to maintain the set following
distance.
If the vehicle ahead slows below your cruise
l
control's set speed, but then accelerates
away, and the ACB system did not need to
use the service brakes as it managed the
intervene as