What is amount of alcohol tolerated for drinking and driving?

Answer 1

Any amount of alcohol impairs your ability to drive. Two drinks is usually more than enough to put a person over the legal limit.

That depends on whether or not the person has developed alcohol tolerance. A study found that when alcoholics were brought to a BAC of .10, almost one quarter (24%) showed absolutely no clinical signs of impairment.

NOTE: Wikipedia is not an authoritative source: Read more: How_many_alcoholic_drinks_does_it_take_to_affect_your_driving_ability

Answer 2

In most jurisdictions, 0.05% blood alcohol content is considered under the influence, and 0.08% is considered prima facie evidence of drunkenness.

Answer 3

In most jurisdictions, a person is considered legally impaired with a blood alcohol level (BAC) of .08% or higher.

Answer 4

Only one if you are not used to drinking alcohol.