Drivers may soon need to pass mandatory vision tests when renewing their driving licences under new proposals. A study on headlight glare, expected to conclude in 2025, aims to understand its causes and find solutions. The research is led by TRL, an independent consultancy, in collaboration with the Department for Transport.
In a recent RAC survey of 2,000 drivers, 89% said some car headlights are too bright, and 28%—the highest proportion so far—felt that most are "excessively bright." Among those concerned, 91% reported experiencing glare, with 74% saying it happens regularly. The effects can be serious; 67% of affected drivers said they had to slow down significantly until their vision recovered, while 64% believed that some headlights are so bright they pose a safety risk.
The study will use cars equipped with sensors to measure light levels during real-world driving. Adam Sampson, chief executive of The Association of Optometrists, has long advocated for mandatory vision tests, citing the growing backlog of cataract surgeries and eye appointments as a concern. He stressed the need for regular vision checks as part of licence renewals to prevent worsening issues.
Rod Dennis, an RAC road safety spokesperson, welcomed the initiative, noting that glare affects many drivers across the country. He said RAC research shows a significant number of drivers struggle with headlight dazzle, leading some to reduce their driving or even stop driving at night.
The problem has become so serious that some drivers have changed their driving habits or given up night driving altogether.
