If the speed of the vehicle increases considerably without application of the accelerator and if continuous use of the service brake is necessary, brake to the appropriate speed before a lower gear is engaged in order to minimise an increase in speed. Repeat this procedure as necessary. Should an applicant fail to select a lower gear with a 2nd attempt, it shall be regarded as coasting. Avoid selecting a lower gear to assist or replace braking in order to reduce the speed of the vehicle.
Gears should be changed, where possible, whilst travelling on a straight course.
An appropriate gear shall be selected before descending a steep gradient.
If an ascending gradient is being negotiated where road speed reduces despite continuous application of the accelerator pedal, then the change down to a lower gear shall be carried out before the speed drops to a point where the use of the lower gear will not serve its purpose or the engine starts laboring.
Make use of the engine/exhaust brake in accordance with traffic pattern or gradient of the road.