The commissioner shall adopt rules prescribing the manner and form in which motor carriers of passengers or household goods shall apply for certificates required by this article. Such rules shall require that the application be in writing, under oath, and that the application:

(1) Contain full information concerning the applicant's financial condition, the equipment proposed to be used, including the size, weight, and capacity of each vehicle to be used, and other physical property of the applicant;

(2) State the complete route or routes over which the applicant desires to operate and the proposed time schedule of the operation;

(3) Set forth all existing transportation in the territory proposed to be served, and wherein the public needs additional service, and why; and

(4) Contain any such other or additional information as the commissioner may order or require.