Every motor carrier subject to this chapter shall establish and maintain adequate and suitable facilities, safety appliances, and other suitable appliances and shall perform such service in respect thereto as shall be reasonably safe and sufficient for the security and convenience of the public, and the safety and comfort of its employees and in all respects just and fair, and without any unjust discrimination or preference. Every motor carrier may be required by the commission to establish and maintain such suitable public service facilities and conveniences as may be reasonable and just. No motor carrier shall discontinue any regular passenger or other public service facility, or change any passenger schedule or timetable without first obtaining authority from the commission so to do, unless the same be done under uniform rules and regulations filed by such motor carrier with the Public Service Commission and approved by said commission. All motor carriers subject to this chapter shall, according to their respective powers and facilities, afford all reasonable, proper, and equal facilities for the interchange of traffic between their respective lines, and for the receiving, forwarding, and delivery of passengers and property to and from their several lines, and those connecting therewith, including common carriers not subject to this chapter, and shall not discriminate in their rates and charges or methods or manner of service between such connecting lines. The commission may require such interchange of traffic and the joint use of terminal facilities as may be reasonable and just.