CITROEN DS3 Handbook page 124

Speed limiter
System which prevents the vehicle from
exceeding the speed programmed by the
driver.
When the programmed speed limit is reached,
pressing the accelerator pedal in the normal
manner no longer has any effect.
The speed limiter is switched on manually: it
requires a programmed speed of at least
20 mph (30 km/h).
The speed limiter is switched off by manual
operation of the control.
The programmed speed can be exceeded
temporarily by pressing the accelerator firmly.
To return to the programmed speed, simply
slow down to a speed below the programmed
speed.
The programmed speed remains in the memory
when the ignition is switched off.
The speed limiter cannot, in any circumstances,
replace the need to respect speed limits, nor can it
replace the need for vigilance on the part of the driver.
Steering mounted controls
The controls of this system are grouped
together on stalk A.
1. Speed limiter mode selection thumb wheel.
2. Value decrease button.
3. Value increase button.
4. Speed limiter on / off button.
displays in the instrument panel
The programmed information is grouped
together in the instrument panel screen.
5. Speed limiter on / off indication.
6. Speed limiter mode selection indication.
7. Programmed speed value.