Section 84.9257 - PASSENGERS(a) A person 18 years of age or older may operate a class 1 all-terrain vehicle carrying only one passenger.(b) A person 18 years of age or older may operate a class 2 all-terrain vehicle while carrying only one passenger, or up to the number of passengers for which the vehicle was designed, whichever is greater.(c) A person 12 to 17 years of age may operate a class 1 all-terrain vehicle carrying only one passenger and the passenger must be the person's parent or legal guardian.1Sp2001 c 2 s 82; 1Sp2005 c 1 art 2 s 44; 2006 c 281 art 2 s 5; 2007 c 131 art 1 s 10; 2011 c 107 s 11