According to
The Economist: "Over 170 countries now impose drink-driving limits, according to a new report by the World Health Organisation, although the amount of alcohol allowed varies considerably. Only 88 countries have a legal limit of 0.05 grams of alcohol (or less) per 100ml of blood, the maximum recommended by the WHO. Some of these countries, such as Saudi Arabia and Pakistan, forbid any alcohol in the blood. Britain and Ireland are more lenient than other countries in Europe, with a legal limit of 0.08 g/dl. Burundi, Palau and Lesotho have the highest limits in the world, at 0.1g/dl."
