How often must you renew your CDL in Colorado?

The renewal period for a Commercial Driver's License (CDL) in Colorado is every five years. This duration allows adequate time for drivers to maintain their skills and keep their knowledge current regarding driving regulations and safety practices. It also aligns with general practices across many states, where a five-year renewal cycle helps ensure that drivers can continue to meet the necessary standards without overwhelming them with frequent renewals. This periodic review of skills and knowledge is essential for maintaining safety on the roads, especially since CDL holders operate larger and often more complex vehicles that can pose significant risks if not operated correctly.