The Department of Transportation shall adopt and enforce rules establishing minimum standards and specifications for safe protective headgear to be worn by people operating bicycles, by passengers on bicycles and by people riding on skateboards or scooters or using in-line skates. The rules shall conform, insofar as practicable, to national safety standards and specifications for such headgear. [1993 c.408 § 6; 2003 c.106 § 2; 2005 c.141 § 1]