Here is another Highway code rule shared by the DVSA. In this one its about the rules on Hot Weather with the Highway Code.
The Highway Code applies to England, Scotland and Wales and is essential reading for everyone.
Keep your vehicle well ventilated to avoid drowsiness. Be aware that the road surface may become soft or if it rains after a dry spell it may become slippery. These conditions could affect your steering and braking. If you are dazzled by bright sunlight, slow down and if necessary, stop.