The Insurance Department shall, after consultation with the insurers licensed to write motor vehicle liability insurance in this Commonwealth, adopt a reasonable Assigned Risk Plan for the equitable apportionment among those insurers of applicants for motor vehicle liability insurance who are entitled to, but are unable to, procure insurance through ordinary methods. When the plan has been adopted, all motor vehicle liability insurers shall subscribe thereto and shall participate in the plan. The plan may provide reasonable means for the transfer of individuals insured thereunder into the ordinary market, at the same or lower rates, pursuant to regulations established by the department.