According to a report in the Daily Telegraph, Sir Peter North has recommended cutting the drink-drive limit from 80mg to 50mg of alcohol per 100ml of blood.
Sir Peter North has submitted his report on the issue but the DfT said no decision had been made on whether to change existing laws.
The Telegraph report says anyone caught above the new limit would face an automatic 12-month driving ban, even if they were only just over the threshold.
The paper also claims Sir Peter has recommended random breath testing of motorists, removing the right to a second breathalyser test at a police station, a 20mg alcohol limit for inexperienced drivers, and a new offence of driving with an illegal substance in the bloodstream at levels deemed impairing.
Sir Peter’s report was commissioned last December by Labour Transport Secretary Lord Adonis, but will now be considered by his coalition successor Philip Hammond.
Commenting on the Telegraph report, James Gibson, Road Safety GB press & PR officer, said: "If the facts reported by the Telegraph are correct, Road Safety GB welcomes the findings of Sir Peter North following his review of drink and drug driving laws.
"Road Safety GB supports the principle of tightening the UK’s drink and drive laws. Driving under the influence of alcohol is directly responsible for hundreds of deaths on our roads each year, yet the UK currently has one of the most lenient alcohol limits in Europe.
"Even a small amount of alcohol can impair a driver’s judgment, impact on reaction times and affect their ability to concentrate. A reduction in the alcohol limit would make many drivers rethink their current behaviour and encourage more motorists to abstain from alcohol completely if they’re driving. This has to be the way forward.
"We look forward to seeing the detail of the report and the new government’s official response. They are right to take time to fully consider the recommendations but we hope that they take the advice of experts and move forward with new measures to save more lives on our roads."
Click here to read the full BBC News report.