Communication
What the exam tests
Communication covers turn signals, four-way flashers, horn use, brake lights, and headlights. Questions test how you tell other drivers what you intend to do.
Core rules
- Signal early and cancel after the turn or lane change.
- Use four-way flashers when moving slowly or stopped in a hazardous position.
- Use the horn only to warn others, not to express anger.
- Tap the brakes lightly to warn a tailgater that you are slowing.
- Use headlights and marker lights in poor visibility.
Worked example
You are approaching a blind driveway with limited sight distance. A short horn tap warns a driver who may pull out. If the driveway is empty, the horn is unnecessary. The reasoning is that the horn is a warning device, and warning is only useful when someone may not see you.
Traps that cost marks
- Signaling too late or forgetting to cancel, which misleads other drivers.
- Using the horn aggressively; exam questions treat it as a warning device.
- Failing to use flashers when stopped in a travel lane.
- Assuming brake lights are enough when you stop unexpectedly.
Exam tip
Communication questions usually ask what action warns others without startling them unnecessarily.