Front seat belts required in new cars
From 1965 it had been compulsory for cars built in Europe to be fitted with seat belts. From 1967 new cars in the United Kingdom were required to be fitted with seat belts in the front seat.
It wasn't until 1983 that it became compulsory for drivers and passengers to wear seat belts in the front. In 1991 it also became compulsory for all rear-seat occupants.
Blood alcohol limit and breathalysing
The Road Safety Act 1967 introduced the first legal maximum blood alcohol limit in the UK. The breathalyser was also introduced in 1967 as a means of testing blood alcohol concentration at the roadside.
British Medical Journal.
Current Practice: Road Safety Act, 1967.
1967; 4(5570): 39–41.
The Royal Society for the Prevention of Accidents (RoSPA).
Seatbelts history: How belting up became law.