U.S. Supreme Court
Sullivan v. Shreveport, 251 U.S. 169 (1919)
Sullivan v. City of Shreveport
submitted November 17, 1919
Decided December 15, 1919
251 U.S. 169
The enforcement of a city ordinance requiring each street car to be operated by a motorman and a conductor, as against a company seeking to substitute at less cost, cars run each by one man with the aid of automatic safety and other operating devices, cannot be declared an arbitrary and unreasonable exercise of police power in the absence of a clear demonstration that the substitutes, thus operated, would prove as safe and convenient for the public as cars operated by two men. P. 251 U. S. 171.
142 La. 573 affirmed.
The case is stated in the opinion. chanroblesvirtualawlibrary