Proposed amendments to the National Road Traffic Amendment Bill could see the blood alcohol level of a driver drop from 0.05g/100ml to 0.02g/100ml, it was reported on Saturday.
This would mean that a person may not even have a full 340ml beer before driving, the Beeld reported.
Gary Ronald from the Automobile Association (AA) told the newspaper that 0.02g/100ml was equivalent to 25ml of vodka or brandy or 75ml of wine.
"Drunk driving is one of the main causes on accidents on our roads. Never mind pedestrians who drink and then try to cross the road," Ronald was quoted as saying.
He said the AA was in favour of the amendment.
The public has until 18 August to comment on the amendment bill.