Correct answer
Yes, to avoid dazzling.
Yes, as soon as you recognise the possibility of dazzling. This duty protects all road users, including pedestrians, and applies on straights and bends. Do not wait for a person to show discomfort or retain main beam simply because you exceed 40 km/h: preventing dazzle takes precedence. Also adjust speed to the illuminated distance, visibility and pedestrians so you can stop safely.
Practice more C licence questions
A self-check with exam-style questions on Truck driving techniques. Free, no signup.
All options
It is not necessary.
Yes, but only on straight sections.
Yes, to avoid dazzling.
Editorial status: editorially approved. This status does not certify legal review. Report a correction
Share this question
Keep studying
Related questions
- You are driving a heavy vehicle of large dimensions and the width of the carriageway does not allow you to be overtaken easily. Are you obliged to facilitate overtaking?
- What precaution should you take before and during a permitted reversing manoeuvre to avoid striking a pedestrian?
- To reduce aerodynamic drag while keeping frontal area, speed and air conditions equal, what is desirable for the drag coefficient Cx?
- Why should a high-visibility vest be stored away from prolonged sunlight, following its instructions?
- When must drivers of heavy vehicles indicate that they can be overtaken?
- A category N2 or N3 lorry uses rear-view mirrors and has no approved alternative indirect-vision system. May it drive without the mandatory left main exterior mirror, replacing it with an interior mirror?