What significant safety measure was standardized under TEA-21?

The significant safety measure that was standardized under the Transportation Equity Act for the 21st Century (TEA-21) is the establishment of blood alcohol concentration (BAC) standards. This legislation played a crucial role in reinforcing the importance of road safety by setting a clear legal threshold for alcohol consumption among commercial drivers. By implementing strict BAC limits, TEA-21 aimed to reduce alcohol-related accidents and fatalities, thereby promoting safer driving conditions in the trucking industry.

Establishing specific BAC standards helps ensure that drivers maintain a level of impairment that is deemed safe for operating a commercial vehicle. This legislative move not only emphasizes the responsibility of drivers to adhere to these standards but also reinforces the broader public safety initiative aimed at reducing incidents related to impaired driving.