Glare on the roads is undesirable, as it can make drivers less able to see the road ahead. TRL is working with the Department for Transport to understand the factors that can cause glare, and how to address them.
In a project running from October 2024 and into the Spring of 2025, TRL will instrument a car and use it to measure light levels experienced by drivers during real driving on UK roads. Factors like the vehicles around the instrumented car, weather conditions and ambient lighting will also be measured, to build a complete understanding of the conditions that are most likely to give rise to high brightness levels, and glare.
A review of scientific evidence and engagement with a range of stakeholders will also be undertaken to make sure that the project builds a comprehensive understanding of the topic, and generates actionable recommendations for the Department for Transport to take forward in international working groups related to this issue.
