FIGURE 50: WARNING POP-UP OF THE IMPACT ALERT
The Impact Alert is the most severe 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 potentially avoid or lessen the severity of a collision. Collision Mitigation Braking CMB applies
vehicle braking to help avoid or lessen the severity of a collision with a forward vehicle.
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.
FOLLOWING DISTANCE ALERT
CONDITION The Following DISTANCE ALERT feature is only available when the coach speed is
greater than 5 mph (8 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.
ACTIONS BY ACB
SYSTEM
“Distance Alert” warning pop-up appears on the DID
The speedometer LEDs illuminate in red
If the vehicles remain to close from each other, an
audible warning will sound
IMPACT ALERT
SITUATION
ACB system detects a risk of collision with a forward-moving vehicle in your lane of
travel.
PA-1652 Operator's Manual H3-45 Coach
4-64 Controls and Instruments
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