(B) Promulgate standards relating to the type of architecture, plan of, and utilization of buildings and other structures and public improvements. Such standards shall be made known to all departments, institutions, universities, offices and other agencies and bodies of the state, for their guidance in preparation of requests and recommendations relative to new buildings, new structures, or other public improvements. Before promulgating such standards, the department of administrative services shall hold public hearings on all proposed standards. Reasonable public notice shall be given at least thirty days prior to the date set for a hearing. Nothing in this section shall interfere with the director of transportation's power to prepare plans for, acquire rights-of-way for, construct, or maintain transportation facilities, or to let contracts for those purposes.