With the broad range of responsibilities drivers must manage when handling a Class 8 semi-truck, it's understandable why a Class A commercial driver's license is required operate one.

All were awaiting a rigorous driving test that could yield a Class A commercial truck driver license necessary to drive big rigs across California’s highways.

All were awaiting a rigorous driving test that could yield a Class A commercial truck driver license necessary to drive big rigs across California’s highways.