When The Truck Itself Adjusts The Speed - Volvo FM Handbook

When the truck itself adjusts the speed

A vehicle is detected in front of the truck
When ACC detects a vehicle, a green symbol lights in
the instrument.
The speed is adapted to the vehicle in front
If the vehicle in front is driving slower than your own
truck's ACC setting, the speed difference is shown
with yellow LEDs on the speedometer.
The ACC will only use the auxiliary brakes to reduce
your speed to the same speed as the vehicle in front,
once your truck has come sufficiently close to it. In
other words, the truck may not start braking as soon as
the symbol appears in the instrument or the
speedometer LEDs light.
If the vehicle in front disappears out of sight
If the vehicle in front disappears out of sight of the
ACC, e.g if the vehicle changes lanes, increases speed
or turns off the road, the symbol will go out and the
truck will accelerate to the set speed again.
On a bend, a vehicle in front can temporarily disappear
from the field of vision of the ACC. As long as the
ACC senses that the truck is on a bend, it maintains
the same speed as before the vehicle disappeared from
the field of vision.
Adaptive cruise control 201
A green symbol in the instrument
shows that ACC has detected a
vehicle
Yellow diodes show the difference
in speed between the vehicle in front
and the truck.
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