As Minister of Transport -LRB- NUMBER@1 December NUMBER@2 NUMBER@3 April NUMBER@4 -RRB- , she introduced the breathalyser to combat the recently acknowledged crisis of drink-driving , and also introduced the 70mph speed limit on motorways .

She was ORGANIZATION@1 -LRB- NUMBER@1 December NUMBER@2 NUMBER@3 April NUMBER@4 -RRB- .
