In the United Kingdom, what road marking consists of short white transverse lines warning of a hazard ahead?

In the United Kingdom, a hazard warning line consists of short white transverse lines warning of a hazard ahead.

The marking is placed on the approach to features such as a junction, bend, hill crest, or other restriction where drivers need to take extra care. Its purpose is caution rather than a complete prohibition: the line warns that the road situation ahead may require reduced speed or a change in position.

A hazard warning line differs from a solid centre line, which can restrict crossing, and from a give-way line, which marks the point where traffic must yield. A stop line is thicker and accompanies a stop requirement at a junction or signal.

The exact pattern and associated signs depend on the road layout. Drivers should read the marking together with nearby signs, sight lines, lane arrows, and the hazard itself rather than treating every short transverse line as a mandatory stop or yield instruction.