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Mud Flap Laws

Colorado law requires the use of splash guards, also referred to as "mud flaps," to minimize the spray of water and other road substances.  This requirement is applicable to large trucks operating on Colorado highways.  Flaps must be installed and functioning at all times.  Torn or damaged flaps must be replaced at the first reasonable and safe opportunity to exit the road. 

The effective date for bills enacted without a safety clause is August 7, 2024, if the General Assembly adjourns sine die on May 8, 2024, unless otherwise specified. Details