Commercial driver’s licenses have been around for 30 years this year, a result of a federal initiative to standardize states’ rules for heavy vehicles. The law took effect in April 1992 after a yearslong push to standardize those rules for trucks traveling on interstates. The net effect of federal baseline standards for state-issued commercial driver’s license (CDL) programs has been numerous lives saved, according to the feds, and a higher standard for commercial drivers behind the wheels of heavy trucks transporting multiple trailers or hazardous materials.
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