Vauxhall ASTRA Owner's Manual page 196

"Rocking the car"
If it becomes necessary to rock the vehicle
to free it from sand, mud, snow or a hole,
move the selector lever from D to R in a
repeat pattern while simultaneously
applying light pressure to the accelerator
pedal. Do not race the engine and avoid
sudden acceleration.
This applies only to the exceptional
circumstances mentioned above.
Manoeuvring the vehicle
To manoeuvre the vehicle back and forth
during attempts to park or in garage
entrances, the vehicle's creeping
movement can be utilised by releasing the
brake pedal.
Never actuate accelerator and brake
pedals simultaneously.
Driving and operation
Stopping the vehicle
The selector lever can be left in the chosen
gear with the engine running.
When stopping on gradients engage
handbrake or depress brake pedal. To
prevent overheating of the transmission,
do not increase engine revolutions to
ensure smooth idling while standing if a
gear has been selected.
Switch off engine if stopping for a lengthy
period, e.g. in traffic jams or at level
crossings.
Before leaving the vehicle, first apply the
handbrake. Then select P. Remove the
ignition key or, with Open&Start system,
remove the electronic key 3 from the
vehicle. Lock the vehicle. Otherwise the
battery may become discharged if the
vehicle is parked up for long periods.
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