High beamUnited Kingdom
An introduction to the traffic rules and road signs of United Kingdom. Learn about driving, road safety and much more in our illustrated book, with answers to frequently asked questions.
For informational purposes only. Always follow official regulations. Some content and images were created with AI assistance.
162. High beam
High beam, also called main beam, is the headlight setting designed to illuminate the road a long distance ahead. It provides stronger and farther-reaching illumination than dipped beam but can dazzle other road users if used incorrectly.
High beam is mainly useful on dark roads where there is no nearby traffic that could be dazzled. Drivers must switch to dipped beam whenever required by traffic conditions or national rules.
Wikimedia.org • Ehsnils • CC BY-SA
May British drivers use high beam when approaching other traffic?
No. Main beam must not be used in a way that dazzles or causes discomfort to approaching or preceding road users, including cyclists. Dip your headlights in good time.

Traffic rules
United Kingdom