79. Traffic cases.

In a very large number of claims arising out of road accidents, issues of contributory negligence arise. Although the question is essentially whether the claimant has taken reasonable care for his own safety in the circumstances, certain principles have emerged. It may be contributory negligence for an ordinary car passenger not to wear a seat belt1, for a motor cyclist not to wear a crash helmet2 and for a passenger to take a lift with a driver knowing him to be drunk and incapable of driving with due care3. There is no rule of law that a motorist who