Summary

Portrait of James Clark McReynolds James Clark McReynolds Hendrick v. Maryland — Opinion of the Court

In the absence of national legislation covering the subject, a state may rightfully prescribe uniform regulations necessary for public safety and order in respect to the operation upon its highways of all motor vehicles,-those moving in interstate commerce as well as others. And to this end it may require the registration of such vehicles and the licensing of their drivers, charging therefor reasonable fees graduated according to the horse-power of the engines,-a practical measure of size, speed, and difficulty of control.
Source: Wikisource

Portrait of James Clark McReynolds James Clark McReynolds Hendrick v. Maryland — Opinion of the Court

In that case a direct tax was laid upon the passenger for the privilege of leaving the state; while here the statute at most attempts to regulate the operation of dangerous machines on the highways, and to charge for the use of valuable facilities.
As the capacity of the machine owned by plaintiff in error does not appear, he cannot complain of discrimination because fees are imposed according to engine power. Distinctions amongst motor machines and between them and other vehicles may be proper, essential, indeed,-and those now challenged are not obviously arbitrary or oppressive.
Source: Wikisource

Get perspective with Kwize: daily news enlightened by great literature