William O. Douglas

“ And the fact that New York City sees fit to eliminate from traffic this kind of distraction but does not touch what may be even greater ones in a different category, such as the vivid displays on Times Square, is immaterial. It is no requirement of equal protection that all evils of the same genus be eradicated or none at all. ”

“ We would be trespassing on one of the most intensely local and specialized of all municipal problems if we held that this regulation had no relation to the traffic problem of New York City. It is the judgment of the local authorities that it does have such a relation. And nothing has been advanced which shows that to be palpably false.
The question of equal protection of the laws is pressed more strenuously on us. It is pointed out that the regulation draws the line between advertisements of products sold by the owner of the truck and general advertisements. ”

“ It is finally contended that the regulation is a burden on interstate commerce in violation of Art. I, § 8 of the Constitution. Many of these trucks are engaged in delivering goods in interstate commerce from New Jersey to New York. Where traffic control and the use of highways are involved and where there is no conflicting federal regulation, great leeway is allowed local authorities, even though the local regulation materially interferes with interstate commerce. ”