Charles Evans Hughes, Smith v. Cahoon — Opinion of the Court
“ In the present instance, the regulation as to the giving of a bond or insurance policy to protect the public generally, in order to be sustained, must be deemed to relate to the public safety. This is a matter of grave concern as the highways become increasingly crowded with motor vehicles, and we entertain no doubt of the power of the state to insist upon suitable protection for the public against injuries through the operations on its highways of carriers for hire, whether they are common carriers or private carriers. ”
