You are driving on a rural road and see this sign ahead: a red-bordered triangular warning sign showing a horse and rider. A single horse and rider are visible around a bend, riding in the same direction as you. What should you do as you approach and overtake?

Explanation

The triangular horse and rider sign warns of horses likely to be in the road ahead. Under Highway Code Rule 215, when you see a horse on the road you must slow down to a maximum of 10 mph, be patient, and must not sound your horn or rev your engine. When it is clearly safe, you should pass wide and slow, giving the horse at least 2 metres of space. The other options are unsafe because they involve higher speeds, close passing, or use of horn/headlights, all of which can startle the horse.