Use of horn and headlight flashing

Proper use of the horn and headlight flashing helps prevent misunderstandings and accidents. Misuse can startle others or be illegal.

When to use the horn

• To warn of immediate danger
• To make yourself known when visibility is limited
• Short, controlled signals – avoid aggressive, long blasts

Headlight flashing

• Brief flash to warn or communicate
• Avoid dazzling; do not use high beam at close range
• Do not “teach lessons” with lights

Tips

• Combine with clear road positioning
• Avoid ambiguous signals; one clear message is best
• Be considerate of pedestrians and cyclists

Related topics

• Communication with other road users
• Attention and interaction
• Right‑of‑way and roundabouts