Business Law 13th Edition by Frank Cross, Kenneth Clarkson, Roger LeRoy Miller

Exercise 15

A state legislature enacted a statute that required any motorcycle operator or passenger on the state's highways to wear a protective helmet. Jim Alderman, a licensed motorcycle operator, sued the state to block enforcement of the law. Alderman asserted that the statute violated the equal protection clause because it placed requirements on motorcyclists that were not imposed on other motorists. Using the information presented in the chapter, answer the following questions.
Why does this statute raise equal protection issues instead of substantive due process concerns?