a. Direct any railroad, street railway or traction company to establish and maintain at any junction or point of connection or intersection with any other line of said road, or with any line of any other railroad, street railway, or traction company, such just and reasonable connections as shall be necessary to promote the convenience of passengers or shippers of property;

b. Direct any railroad, street railway or traction company engaged in carrying merchandise to construct, maintain and operate, upon reasonable terms, a switch connection with any private side track which may be constructed by any shipper to connect with the railroad or street railway where, in the judgment of the board, such connection is reasonable and practicable and can be put in with safety and will furnish sufficient business to justify the construction and maintenance of the same.