
234 U.S. 280 (1914)
ATLANTIC COAST LINE RAILROAD COMPANY
v.
STATE OF GEORGIA.
No. 24.
Supreme Court of United States.
Argued April 17, 1913.
Decided June 8, 1914.
ERROR TO THE COURT OF APPEALS OF THE STATE OF GEORGIA.
*281 Mr. Henry L. Stone, with whom Mr. Alfred P. Thom, Mr. Alexander Hamilton and Mr. Robert C. Alston were on the brief, for plaintiff in error.
Mr. Thomas S. Felder, Attorney General of the State of Georgia, for defendant in error.
*286 MR. JUSTICE HUGHES delivered the opinion of the court.
The Atlantic Coast Line Railroad Company, the plaintiff in error, was convicted of violating a statute of the State of Georgia known as the `headlight law.' Pub. Laws (Ga.), 1908, pp. 50. 51; Civil Code, §§ 2697, 2698. In defense it was insisted that the act contravened the commerce clause and the Fourteenth Amendment of the Constitution of the United States. On appeal from the judgment of conviction the Court of Appeals of the State of Georgia certified the questions thus raised, together with others involving the application of the state constitution, to the Supreme Court of the State. Answering these questions, that court sustained the validity of the statute (135 Georgia, 545), whereupon final judgment was entered and this writ of error was sued out.
The material portions of the statute are as follows:
*287 "Section 1. Be it enacted by the General Assembly of Georgia, and it is hereby enacted by authority of the same, That all railroad companies are hereby required to equip and maintain each and every locomotive used by such company to run on its main line after dark with a good and sufficient headlight which shall consume not less than three hundred watts at the are, and with a reflector not less than twenty-three inches in diameter, and to keep the same in good condition. The word main line as used herein means all portions of the railway line not used solely as yards, spurs and sidetracks.
"Section 2. Be it further enacted, That any railroad company violating this Act in any respect shall be liable to indictment as for a misdemeanor in any county in which the locomotive not so equipped and maintained may run, and on conviction shall be punished by fine as prescribed in Section 1039 of the Code of 1895. . . .
"Section 4. Provided this Act shall not apply to tram roads, mill roads and roads engaged principally in lumber or logging transportation in connection with mills."
The contention is made that this act deprives the company of its liberty of contract, and of its property, without due process of law. It compels the disuse of a material part of the company's present equipment and the substitution of a new appliance. The use of locomotive headlights, however, is directly related to safety in operation. It cannot be denied that the protective power of government, subject to which the carrier conducts its business and manages its property, extends as well to the regulation of this part of the carrier's equipment as to apparatus for heating cars or to automatic couplers. The legislature may require an adequate headlight, and whether the carrier's practise is properly conducive to safety, or a new method affording greater protection should be substituted, is a matter for the legislature judgment. But it is insisted that the legislature has gone beyond the *288 limits of its authority in making the specific requirements contained in the act as to the character and power of the light and the dimensions of the reflector. This argument ignores the established principle that if its action is not arbitrary  is reasonably related to a proper purpose  the legislature may select the means which it deems to be appropriate to the end to be achieved. It is not bound to content itself with general directions when it considers that more detailed measures are necessary to attain a legitimate object. Particularization has had many familiar illustrations in cases where there has been a conviction of the need of it, as, for example, in building regulations and in provisions for safeguarding persons in the use of dangerous machinery. So far as governmental power is concerned, we know of no ground for an exception in the case of a locomotive headlight.
It cannot be said that the legislature acted arbitrarily in prescribing electric light, in preference to others, or that, having made this selection, it was not entitled to impose minimum requirements to be observed in the use of the light. Witnesses for the plaintiff in error, including its general superintendent of motive power and other employes holding important positions and conversant with the exigencies of operation, presented their objections to the use of the electric headlight. Locomotive engineers who for many years had driven locomotives with such a light testified for the State, expressing a decided opinion in favor of the use of electric headlights in the interest of safe operation and submitting their views in answer to the objections that had been urged. Assuming that there is room for differences of opinion, this fact does not preclude the exercise of the legislative discretion. So far as the question was one simply of expediency was to the best method to provide the desired security  it was within the competency of the legislature to decide it. N.Y. & N.E.R.R. Co. v. Bristol, 151 U.S. 556, 571; C., B. & Q. *289 Ry. Co. v. Drainage Com'rs, 200 U.S. 561, 583, 584; McLean v. Arkansas, 211 U.S. 539, 547, 548; C., B. & Q.R.R. Co. v. McGuire, 219 U.S. 549, 568, 569, and cases there cited.
As to the objection that the statute makes no provision for conditions beyond the carrier's control, it is sufficient to say that in the light of the construction placed upon the act by the Supreme Court of the State, we are not at liberty to regard it as open to this criticism (135 Georgia, pp. 561, 562); certainly, no such case is here presented. We conclude that there is no valid objection to the statute upon the ground that it deprives the carrier of liberty or property without due process of law.
The further contention is that the statute offends in denying to the plaintiff in error the equal protection of the laws. Specifically, the complaint is that the act does not apply to receivers operating railroads, and that it expressly excepts tram roads, mill roads and roads engaged principally in lumber or logging transportation in connection with mills. As to the first, it cannot be said that the act does exclude receivers from its requirements. The state court has ruled that the words `railroad company' in the statute include natural persons as well as corporations. It declined to decide that receivers were not included; but, conceding, without deciding, that they were not, it was held that the statute would not for that reason violate the equal protection clause in view of the temporary and special character of receivers' management. 135 Georgia, pp. 555, 556. We concur in this view. As to the exceptions made by the statute of tram roads, mill roads, etc., it is impossible to say that the differences with respect to operation and traffic conditions did not present a reasonable basis for classification. Lindsley v. Natural Carbonic Gas Co., 220 U.S. 61, 78, 81; Barrett v. Indiana, 229 U.S. 26, 30; German Alliance Ins. Co. v. Kansas, 233 U.S. 389, 418.
*290 Finally, it is urged that the statute constitutes an unwarrantable interference with interstate commerce. The locomotive, with respect to which the accusation was made, was at the time being regularly used in the hauling of interstate freight trains over the company's main line of railroad and was equipped with an oil headlight. The statute, as the Supreme Court of the State said, was not directed against interstate commerce, but it was held that it incidentally applied to locomotives used in hauling interstate trains while these were moving on the main line in the State of Georgia. This being so, the act is said to be repugnant to the exclusive power of Congress. It is argued that if Georgia may prescribe an electric headlight, other States through which the road runs may require headlights of a different sort; that, for example, some may demand the use of acetylene and that others may require oil; and that, if state requirements conflict, it will be necessary to carry additional apparatus and to make various adjustments at state lines which would delay and inconvenience interstate traffic.
The argument is substantially the same as that which was strongly presented to the court in New York, New Haven & Hartford R.R. Co. v. New York, 165 U.S. 628, where the plaintiff in error was held subject to penalty for the violation of a New York statute which in substance made it unlawful for any steam railroad doing business in that State to heat its passenger cars, on any other than mixed trains, by any stove or furnace kept inside of the car or suspended therefrom. The railroad company was a Connecticut corporation having but a few miles of road within the State of New York and operating through trains from New York through Connecticut to Massachusetts. As this court said in its opinion, the argument was made that `a conflict between state regulations in respect of the heating of passenger cars used in interstate commerce would make safe and rapid *291 transportation impossible; that to stop an express train on its trip from New York to Boston at the Connecticut line in order that passengers may leave the cars heated as required by New York, and get into other cars heated in a different mode in conformity with the laws of Connecticut, and then at the Massachusetts line to get into cars heated by still another mode as required by the laws of that Commonwealth, would be a hardship on travel that could not be endured.' But the court ruled that these `possible inconveniences' could not affect `the question of power in each State to make such reasonable regulations for the safety of passengers on interstate trains as in its judgment, all things considered is appropriate and effective.' 165 U.S. 632, 633.
In thus deciding, the court applied the settled principle that, in the absence of legislation by Congress, the States are not denied the exercise of their power to secure safety in the physical operation of railroad trains within their territory, even though such trains are used in interstate commerce. That has been the law since the beginning of railroad transportation. It was not intended that pending Federal action the use of such agencies, which unless carefully guarded was fraught with danger to the community, should go unregulated and that the States should be without authority to secure needed local protection. The requirements of a State, of course, must not be arbitrary or pass beyond the limits of a fair judgment as to what the exigency demands, but they are not invalid because another State in the exercise of a similar power may not impose the same regulation. We may repeat what was said in Smith v. Alabama, 124 U.S. 465, 481, 482: "It is to be remembered that railroads are not natural highways of trade and commerce. . . . The places where they may be located, and the plans according to which they must be constructed, are prescribed by the legislation of the State. Their operation requires the use of instruments *292 and agencies attended with special risks and dangers, the proper management of which involves peculiar knowledge, training, skill, and care. The safety of the public in person and property demands the use of specific guards and precautions. . . . The rules prescribed for their construction and for their management and operation, designed to protect persons and property, otherwise endangered by their use, are strictly within the limits of the local law. They are not per se regulations of commerce; it is only when they operate as such in the circumstances of their application, and conflict with the expressed or presumed will of Congress exerted on the same subject, that they can be required to give way to the supreme authority of the Constitution." See also, Nashville &c. Rwy. Co. v. Alabama, 128 U.S. 96; Hennington v. Georgia, 163 U.S. 299; N.Y., N.H. & H.R.R. Co. v. New York, supra; Lake Shore & M.S. Rwy. Co. v. Ohio, 173 U.S. 285; Missouri Pacific Rwy. Co. v. Larabee Mills, 211 U.S. 612; Missouri Pacific Rwy. Co. v. Kansas, 216 U.S. 262; Chicago, R.I. & Pac. Rwy. Co. v. Arkansas, 219 U.S. 453; Minnesota Rate Cases, 230 U.S. 352, 402, 410.
If there is a conflict in such local regulations, by which interstate commerce may be inconvenienced  if there appears to be need of standardization of safety appliances and of providing rules of operation which will govern the entire interstate road irrespective of state boundaries  there is a simple remedy; and it cannot be assumed that it will not be readily applied if there be real occasion for it. That remedy does not rest in a denial to the State, in the absence of conflicting Federal action, of its power to protect life and property within its borders, but it does lie in the exercise of the paramount authority of Congress in its control of interstate commerce to establish such regulations as in its judgment may be deemed appropriate and sufficient. Congress, when it pleases, may give the rule and make the standard to be observed on the interstate highway.
*293 It is suggested that Congress has acted in the present instance. Reference is made to the act of March 2, 1893, c. 196, 27 Stat. 531, relating to power driving-wheel brakes for locomotives, grabirons, automatic couplers and height of drawbars; to the act of March 2, 1903, c. 976, 32 Stat. 943, amending the act of 1893; to the act of May 27, 1908, c. 200, 35 Stat. 317, 324, 325, authorizing the Interstate Commerce Commission to keep informed regarding compliance with the Safety Appliance Act and to investigate and report on the need of any appliances or systems intended to promote the safety of railway operations; to the act of May 30, 1908, c. 225, 35 Stat. 476, relating to locomotive ash pans; to the act of April 14, 1910, c. 160, 36 Stat. 298, relating to sill steps, hand brakes, ladders, running boards and hand holds and providing that the Interstate Commerce Commission should after hearing designate the number, dimensions, location and manner of application of these appliances and of those required by the act of 1893; to the detailed regulations prescribed by the Commission, on March 13, 1911, pursuant to this authority; to the act of May 6, 1910, c. 208, 36 Stat. 350, requiring the Commission to investigate accidents and make report as to their causes with such recommendations as they may deem proper; and to the act of February 17, 1911, c. 103, 36 Stat. 913, relating to locomotive boilers.
But it is manifest that none of these acts provides regulations for locomotive headlights. Attention is also called to the investigations conducted by what is known as the `block-signal and train control board' (organized by the Commission) and the reports of that board with respect to sundry devices and appliances, including headlights. It does not appear, however, either that Congress has acted or that the Commission under the authority of Congress has established any regulation so far as headlights are concerned. As to these, the situation has not been altered by any exertion of Federal power and the *294 case stands as it has always stood without regulation unless it be supplied by local authority. The most that can be said is that inquiries have been made, but that Congress has not yet decided to establish regulations, either directly or through its subordinate body, as to the appliance in question. The intent to supersede the exercise of the State's police power with respect to this subject cannot be inferred from the restricted action which thus far has been taken. Missouri Pacific v. Larabee Mills, supra; Savage v. Jones, 225 U.S. 501, 533.
The judgment is affirmed.
Affirmed.
