As the winter months set in, the sun’s low position in the sky can create a dangerous phenomenon: sun dazzle. This intense brightness can impair vision, making it harder for road users to anticipate hazards and react safely. Vulnerable road users, such as cyclists and pedestrians, face heightened risks during this time. The issue with sun dazzle is also compounded by the adverse weather conditions which can include ice, snow and wet roads. This means that any issues can be made worse as a result.
A Case That Highlights the Risks
I once represented a cyclist who was clipped by a passing car, causing him to fall onto the road. If that wasn’t bad enough a second driver, unable to see clearly due to sun dazzle, ran him over while he was on the ground. While my client sustained serious injuries, a combination of targeted rehabilitation and his determination allowed him to make a remarkable recovery and return to many of his pre-collision activities.
This case serves as a powerful reminder that reduced visibility caused by sun glare can have devastating consequences. However, drivers and cyclists can take proactive steps to minimize the risks.
What does the Highway Code say about Driving when Facing Sun Dazzle?
The Highway Code (section 237) is clear: when visibility is compromised, drivers should slow down or even stop if necessary.
How Cyclists Can Protect Themselves
While much of the responsibility lies with drivers, cyclists can also take steps to stay safer during low sun conditions:
- Use front and rear lights. Ensure they are fully charged or have working batteries.
- Wear reflective or bright clothing. While not legally required, it can help with visibility.
- Check your bike’s condition – tyre tread, tyre pressure, brakes, and braking surfaces.
Essential Sun Dazzle Safety Tips
- Reduce speed significantly and stop if necessary .
- Scan the road carefully. Utilise valuable moments when the sun is less obstructive, such as when going round bends.
- Avoid taking risks. Proceed cautiously, keeping vulnerable road users in mind.
- Use a sun visor if there is one.
- Make sure you are wearing good-quality sunglasses.
- Keep windows clean inside and out.
- Top up screen wash and check wipers.
- Ensure your eye prescription is up to date.
- Maintain safe following distances.
- Check tyre treads, pressures, and brake wear.
- Time and plan your journeys carefully. Avoid long stretches of road facing directly into the sun at sunrise or sunset when possible.
The Scale of the Problem
In 2023 alone, there were 1,770 reported collisions where sun dazzle was recorded as a contributing factor, according to the Department for Transport.
Stay Vigilant, Stay Safe
Low sun conditions demand heightened caution from all road users. Motorists must adjust their behaviour to avoid putting vulnerable road users at risk, while cyclists can take practical steps to enhance their visibility. Together, we can reduce the risks and keep everyone safer on the roads.






