A learner may complete a lane change smoothly while still relying too heavily on the instructor’s instructions. The professional goal is to develop an independent decision: where to change, when to change and whether the gap will remain safe.
The right starting point is location selection
Choose a calm, appropriate stretch of multi-lane road. Avoid training a first lane change immediately before traffic lights or where a junction, parked vehicle or complex intersection adds unnecessary workload. Explain how the learner should identify the desired lane well before an upcoming turn or exit.
The South Australian Driving Companion Unit 3 Task 16 describes changing lanes and diverging or merging, including the need for a suitable location, sound car-control procedure and an appropriate blind-spot check just before entering the new lane. This is distinct from Batch 01’s article about recognising the different road laws for zip-merging and marked lane endings.
Make the gap decision visible
Before signalling, ask the learner to compare the speed and spacing of vehicles in the target lane. They should recognise whether a following driver is gaining rapidly and whether there is enough time and space to change without disrupting another road user. A mirror view is a snapshot; the driver must continue monitoring movement and checking the relevant blind spot.
A signal communicates intention; it does not create right of way. Under normal lane-changing requirements, the driver must give way to vehicles already travelling in the lane being entered.
A gradual lesson progression
First practise a brief spoken plan while parked. Then complete a lane change on a suitable quiet road with instructor prompts. On subsequent attempts, reduce prompts so the learner identifies the opportunity independently. Finally, introduce more realistic traffic densities, while retaining enough margin to stop the exercise safely.
Debrief the learner’s choice of gap, not simply whether they crossed the lane marking. Ask whether the vehicle behind was closing, whether the indication was timed properly and what changed during the blind-spot check.
Common errors and their coaching responses
A learner who stares at the mirror may drift out of lane: reinforce forward tracking and short purposeful glances. A learner who moves immediately after signalling needs to learn that indication and priority are separate. A learner who waits indefinitely may need practice reading relative speed in simpler traffic, not pressure to “just go”.
The desired outcome is a lawful, smooth lane change that the student can explain and repeat without a running commentary from the instructor.
Official references and further learning
- MyLicence Driving Companion: Unit 3 Task 16
- South Australian Driver’s Handbook: Signals
- South Australian Driver’s Handbook: Giving way
Explore DAA car driving instructor training.
Road-law information checked against the linked South Australian Government sources on 16 October 2026. Educational commentary only; always check the currently authorised rules and the requirements applicable to a specific training or assessment program.