What is the limit on an alcohol breathalyzer?

Fifty states have adopted 0.08 as the legal line for operation a motor vehicle. This is only the cases of individuals over the age of 21. Drivers under the age of 21 are not allowed to have any alcohol in their system whatsoever. In Nova Scotia the N has to be taken off your drivers license before you are allowed to have anything in your system. If found with even a drop of alcohol in a new driver, their beginners will automatically be suspended.