Is it permitted to use high beam headlights on interurban roads during heavy rain or fog?

Question

DentroTest · Accepted Answer

The correct answer is: 'Yes, but not recommended due to glare'. Detailed explanation: Regulations: Traffic regulations do not explicitly forbid the use of high beams (main beams) on interurban roads under adverse weather conditions, provided that you do not dazzle other road users (oncoming traffic or vehicles ahead via their mirrors). Mirror Effect: However, it is not recommended in thick fog or heavy rain. The suspended water droplets act like tiny mirrors that reflect the powerful light of the high beams back into the driver's eyes. This creates a visual 'white wall' or glare that drastically reduces visibility instead of increasing it. Recommendation: The safest practice in these situations is to use low beams (dipped headlights) combined with front fog lights (if available) and rear fog lights, as they illuminate the road surface better and reduce self-glare.

Is it permitted to use high beam headlights on interurban roads during heavy rain or fog?

Want to pass the Permit B (English) theory test first time?

📚 Keep practicing with more questions from Lighting and Optical Signaling

Minimum Number of Side Position Lights on a Vehicle

Lights to use when retrieving fallen cargo

Low Beam and Position Lights

Serious Lighting Offense

Parking Lights

Lighting System Failure

Mandatory Interior Lighting Requirements for Vehicles

Mandatory Use of Dipped Headlights on Motorcycles During the Day

Using Arm Signals for Driving Maneuvers

Action to take when dazzling with high beams