Why is there a limit in place for drink driving in England?

Answer 1

The 30mph speed limits where initially introduced in the 1930s in built up areas in an attempt to reduce casualties. The 70mph limit on previously unrestricted roads was introduced in the 1970s for in response to the growing number of accidents and fatalities on Britain's motorways.

Many people criticise the enforcement of speed limits as a 'way to make money' however the money raised from speeding tickets and speed awareness courses is far outweighed by the cost of enforcement and the clear up of speed-related incidents.

Answer 2

The limit is in place to prevent people from operating dangerous machinery while their judgement is seriously impaired.