Law, Business and Society 11th Edition by Tony McAdams

Exercise 50

As a safety measure, Arizona enacted a statute that limited the length of passenger trains to 14 cars and freight trains to 70 cars. Trains of those lengths and greater were common throughout the United States. The Southern Pacific Railroad challenged the Arizona statute.
a. What was the legal foundation of the Southern Pacific claim
b. Decide the case. Explain. See Southern Pacific Railroad v. Arizona , 325 U.S. 761 (1945).