A new study suggests drivers over 55 are impaired if they have even one drink before getting behind the wheel.
Researchers at the University of Florida looked at how booze impaired the driving ability of 72 people and found that those between the ages of 55 and 70 saw their driving skills diminish after just one drink, while those between 25-36 appeared to maintain their driving skills.
None of the study participants had blood alcohol levels above the 0.08 legal limit.
Study participants took a simulated driving test while sober and then returned later to take the test after consuming a drink that raised blood alcohol levels to between 0.04 and 0.065.
Researchers say the results suggest that even low alcohol consumption within the legal limit can "compromise" the driving skills of older motorists and it may be time for governments to change alcohol rules for drivers of all ages.
Study co-author Alfredo Sklar tells CBS the result do not mean small amounts of alcohol are safe for younger drivers.