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EXAMPLE OF THE SPEEDOMETER LED DISPLAY WHEN
THE FORWARD VEHICLE IS SLOWER WHILE THE
COACH TRAVELS WITH THE ACB CRUISE CONTROL
ON AND SET
06729_3
Following Distance Alert (Fda)
Following Distance Alert provides both audible
and visual warnings whenever the distance
between the coach and the forward vehicle is
less than the set distance and getting closer.
Once the audible warning is given, the driver
must increase the distance between the coach
and the vehicle ahead until the audible warning
stops or maneuver clear of the forward vehicle.
WARNING
Following Distance Alert is always active
whenever the coach is moving to a speed
greater than 37 mph (60 km/h), whether or not
ACB is turned on. Active interventions of ACB
to maintain safe following distance (throttle
reduction, engine brake/retarder application,
service
brakes
application)
operational when the ACB is engaged with a
cruise speed set.
Impact Alert
The Impact Alert warning is the
warning issued by the ACB system. This alert
indicates that the driver must take immediate
evasive action by applying more braking power
and/or steering clear of the vehicle ahead to
avoid a potential collision.
The Impact Alert is also applicable to stationary
metallic objects such as stopped or stalled
vehicles. This alert provides a warning given up
to 3.0 seconds before a potential collision with a
stationary metallic object in the coach's lane of
travel. The driver can either slow down or
maneuver in an attempt to avoid the object. The
Impact Alert will only warn and will not actively
decelerate
approaching stationary objects.
Impact Alerts are always operational when the
vehicle is running, whether or not ACB is
turned on. Active interventions of ACB to
maintain safe following distance (throttle
reduction, engine brake/retarder application,
service
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
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.
are
only
m ost severe
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PA1627 X3-45 Operator's Manual
Controls and Instruments
or
brake
the
WARNING
brakes
application)
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The
driver
4-15
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when
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should
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Troubleshooting
