All vehicles operating under the provisions of Class J, section nineteen shall operate from a stand or stands, and the state road commissioner shall have power to grant a permit to any applicant who operates from a stand or stands and who does not propose to operate upon a regular schedule, but who is privately employed for a specific trip and who will not solicit or receive patronage along a route for which a certificate of convenience has been granted by the state road commissioner for the operation of vehicles over a regular route or between fixed termini: Provided, however, That vehicles operating under Class J, or Class K may receive passengers or property along routes for which a certificate of convenience has been granted, but not at or within two hundred feet of any building owned or maintained as a designated stop: Provided further, That the charge made by such persons operating under Class J or Class K for such service, when rendered over a route for which a certificate of convenience has been granted, shall not be less than the rate charged by the holder of such certificate of convenience.
The state road commissioner shall have the power to issue to any applicant a certificate of convenience, or to refuse to issue the same, or issue it for the partial exercise only of the privileges sought, and may attach to the exercise of the rights given by such certificates such terms and conditions as in his judgment the public convenience and necessity may require. No such certificate of convenience shall be issued by the commissioner until it shall be established to the satisfaction of the commissioner, after a proper investigation, that the privilege so sought by the applicant is necessary or convenient for the public, and that the service so proposed to be rendered by the applicant is not being adequately performed at the time of such application by any other person, partnership or corporation. If a certificate of convenience be granted for service over a regular route or between fixed termini, the state road commissioner shall prescribe the route, territory, schedule, fare or tariff in connection with such service, and in all cases may make such other rules and regulations relative to the operation of such vehicle or vehicles as public justice may demand. When such certificate of convenience is issued for service over a regular route or between fixed termini, no change shall be made in the route, schedule, fares or tariffs of such vehicle or vehicles, without the express permission of the state road commissioner.