PREVOST X3-45 2011 Operator'S Manual Download

Page: 46 / 214

Controls and Instruments

NOTE

The following paragraphs briefly sum up the
information concerning the operation and
function of the ACB. Before driving the
vehicle, be certain that you have read and
that you fully understand each and every step
of the driving and handling information found
in Bendix Wingman ACB Active Cruise with
Braking Operator’s Manual. The driver should
fully understand all the audible alerts and
visual indicators that the system provides.
Bendix Wingman ACB Active Cruise with
Braking Operator’s Manual (available on
Prevost web site and included on the
Technical Publications CD) will assist in
explaining what each of them means and
what actions the driver may be required to
take to avoid potential collisions.

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 warn-
ings 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, retarder or engine brake application
and service brakes 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 warnings features.
Whenever the cruise control is engaged, the
ACB is also engaged. You cannot engage the
cruise control without also using 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 cancelled.
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:

•

If the vehicle in front of the coach slows
down

below your cruise control set speed,

the system will progressively intervene as
follows, in this order:

1) reduce the engine throttle;

2) apply the engine brake or transmission

retarder;

3) apply about 30% of the service brakes

available braking power in an attempt to
maintain the set following distance.