When should rear fog lights be used?

In dense fog or falling snow.
Only in light fog.
When the vehicle behind is too close.
Always when driving at night in an unlit area.

Explantion: A driver must only use rear fog lights in dense fog or falling snow. Using fog lights in normal road and weather conditions can dazzle or blind following motorists. Also, fog lights may make brake lights harder to see.

Theory Tester

When should rear fog lights be used?

Managing Risk