La. Stat. tit. 45 § 1095
If the railroads, and other common carriers, express, telegraph and telephone companies referred to in R.S. 45:1093 through 45:1096 fail to establish reasonable joint through rates and charges for transportation of freight and express matter, and the transmission of communications by telegraph and telephone, the Louisiana Public Service Commission shall, upon the application of any person, adopt such reasonable and just rates and charges for the transportation of freight carried over the lines of two or more connecting railroads or other connecting common carriers, or for the transportation, over the lines of two or more connecting express companies, or the transmission of communications over two or more connecting telephone or telegraph lines in Louisiana; and all such rates and charges thus adopted by the commission shall go into effect within thirty days after publication in the official journal of the commission, and written or telegraph notice given to such companies.
La. R.S. § 45:1095