A review of drink-driving by Sir Peter North claimed reducing the limit from 80mg per 100ml of blood would save hundreds of lives.
The report also made recommendations that nurses, as well as doctors, should be allowed to authorise blood tests of drink-driving suspects.
Sir Peter's report was commissioned by the Labour government. It is still unclear whether the current government will implement the report's recommendations.
Mr Ram Moorthy, deputy chairman of the BMA's Board of Science, said: 'The BMA is very pleased that the North Review is calling for a reduction in the drink drive limit and we urge the government to act on the review's findings.'