§ 106. Discrimination prohibited; connecting lines. Every common carrier shall afford all reasonable, proper and equal facilities for the interchange of passenger and property traffic between the lines owned, operated, controlled or leased by it and the lines of every other common carrier, and for the prompt transfer of passengers and for the prompt receipt and forwarding of property to and from its said lines; and no common carrier shall in any manner discriminate in respect to rates, fares or charges or in respect to any service or in respect to any charges or facilities for any such transfer in receiving or forwarding between any two or more other common carriers or between passengers or property destined to points upon the lines of any two or more other common carriers or in any respect with reference to passengers or property transferred or received from any two or more other common carriers. This section shall not require a common carrier to permit or allow any other common carrier to use its tracks or terminal facilities. Every common carrier shall receive from every other common carrier, at a connecting point, freight cars of proper standard, and haul the same through to destination, if the destination be upon a line owned, operated or controlled by such common carrier, and such service shall not be construed as requiring a common carrier to permit or allow any other common carrier to use its tracks or terminal facilities; or if the destination be upon a line of some other common carrier, to haul any car so delivered through to the connecting point upon the line owned, operated, controlled or leased by it, by way of route over which such car is billed, and there to deliver the same to the next connecting carrier. Nothing in this section shall be construed as limiting or modifying the duty of a common carrier to establish joint rates, fares and charges for the transportation of passengers and property over the lines owned, operated, controlled and leased by it and the lines of other common carriers, nor limiting or modifying the power of the commissioner to require the establishment of such joint rates, fares and charges. A railroad company and a street railroad company shall not be required to interchange cars except on such terms and conditions as the commissioner may direct.