PEUGEOT 308 Handbook page 147

Limits of operation
The speed regulation range is limited to a
maximum difference of 20 mph (30 km/h)
between the speed setting and the speed of the
vehicle in front.
Above this, the system goes into pause if the
safe distance becomes too low.
The active cruise control uses only engine
braking to slow the vehicle. Consequently the
vehicle looses speed slowly, as when releasing
the accelerator pedal.
The system is paused automatically:
- if the vehicle in front slows down to much
or too suddenly, and the driver does not
brake,
- if a vehicle comes between your vehicle
and the vehicle in front,
- if the system does not slow the vehicle
enough to continue to maintain a safe
distance, for example when descending a
steep hill.
As the radar's field of view is quite narrow, it is
possible that the system may not detect:
- vehicles of reduced width, such as
motorcycles, for example,
- vehicles not running in the middle of the
lane,
- vehicles entering a corner,
- vehicles changing lane at the last moment.
The cruise control does not take account of:
- stationary vehicles,
- vehicles driving in the opposite direction.
Driving
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