Fitness to Drive

Fitness to Drive

Key Facts:

  • Medical conditions are a relatively minor risk factor in road traffic crashes, being reported as a contributory factor in 7% of fatal crashes and 3% of all reported crashes. (RRCGB, DfT, 2017)

  • However, their prevalence as a contributory factor may be under-estimated in road accident data due to the difficulties in assessing whether those involved had a medical condition, and if so, whether it contributed to the crash or its consequences.

  • Epilepsy is rated as a high-risk condition for crash involvement.

  • Drivers with diabetes have a higher crash risk than those without diabetes, and the risk is even higher for diabetic drivers who are not taking medication for the disease.

  • Drivers with either insomnia or obstructive sleep apnoea syndrome have a significantly increased crash risk compared with controls.

  • The research evidence is inconclusive regarding the association between cardiovascular disease and crash risk.

  • Heart disease is the most common cause of sudden death at the wheel, but not of acute collapses at the wheel (diabetes and epilepsy).

  • Evidence is inconsistent regarding musculoskeletal conditions and crash risk but cognitive symptoms of multiple sclerosis are associated with increased crash risk.

  • There is no significant association between hearing impairments and crash risk.


  • Date Added: 03 Apr 2012, 08:12 AM
  • Last Update: 11 Dec 2017, 05:01 PM