What is the legal blood alcohol concentration (BAC) limit for commercial drivers?

The legal blood alcohol concentration (BAC) limit for commercial drivers is set at 0.04%. This standard is significantly lower than the limit for non-commercial drivers, reflecting the greater responsibility and potential hazards associated with operating commercial vehicles. This stricter limit aims to enhance safety on the roads, given that commercial drivers often operate large trucks and buses, which can cause more severe accidents when influenced by alcohol.

The reasoning behind the 0.04% limit is that even small amounts of alcohol can impair judgment, coordination, and reaction times, which are critical for the safe operation of heavy machinery. It is important for commercial drivers to understand that this limit applies while they are operating a commercial vehicle and that, at levels above this threshold, they can face serious legal penalties, including fines and license suspension. Furthermore, many employers have policies that prohibit any alcohol use during working hours, reflecting the industry's commitment to safety.