A railroad company operating its road through the streets of a populous city is bound to observe extraordinary precau- tions for the safety of the public, particu- larly at street crossings; 40 La. Ann. 810; 70 Tex. 126; 84 Va. 63; 85 Ky. 224. It is the duty of the company to use on its cars, etc., all the modern improve- ments in machinery commonly used; 65 Barb. 92: 76 N. C. 454; 83 Ala. 518; 76 Ia. 387. Express business. Railroad companies are not required to transport the traffic of independent express companies over their lines in the manner in which such traffic is usually carried; or to do more as express carriers than to provide the public at large with reasonable express accom- modation. They need not furnish all ex- press companies equal facilities on their passenger trains; 117 U. S. 1; Miller and Field, JJ., dissenting; 70 Cal. 169; 57 Fed. Rap. 673; 43 N. J. Eq. 77. But it has been held that they may be compelled to admit the agents of express companies on their trains, with their safes; 6L. R. A. (N. C.) 271. And an early case held that a con- tract giving exclusive privileges to one ex- press company is void; 2 Phila. 107; and in Maine a statute provides for equal facilities to all; 81 Me. 92. It has been held that a railroad company cannot as- sume the exclusive right of carrying on the express business over its own lines; 4 Fed. Rep. 481; but this was decided prior to the case in 117 U. S. 1, supra. See EXPRESS COMPANIES; FACILITIES. The exclusive grants to railroad com- panies are to be strictly construed in favor of the corporation, and liberally expounded in favor of public rights and interests; 11 Pet. 420; 13 How. 71; 1 La. Ann. 253. The power to build a railroad includes the power to build switches; 56 Pa, 825; but all customers have not an equal right to have switches built for them. 31 U. S. App. 252. An act providing that a carrier accept- ing goods for transportation over connect- ing lines assumes an obligation for their safe carriage to the point of destination, etc., is not a regulation of interstate com- merce, but establishes a rule of evidence and does not conflict with the United States constitution touching interstate commerce; 169 U. S. 311. But a carrier is not liable beyond its own lines, unless its liability be established by clear evidence; 155 U. S. 333. See СоMMON CARRIERS. A railroad corporation is a person within the fourteenth amendment declaring that no state shall deprive any person of prop-