Safe driving and emergenciesQuestion 256 of 296
You drive at night on a divided highway. A vehicle comes toward you on the other roadway. When must you dim your high beams for it?
- Always, when the vehicle is within 150 m
- Never, because the roadways are separate
- Only when the other driver flashes the lights
- Only if your light could interfere with that driver's safe driving
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Correct answer: Only if your light could interfere with that driver's safe driving
On a divided highway, the 150 m rule for oncoming vehicles does not apply by itself. You must still dim your lights when they could disturb the driver on the other roadway.
Questions last reviewed: 18 October 2026