Rules for Adopting, Amending or Repealing Administrative Regulations & for Issuing Advisory Rulings; Control & Restriction of Billboards, Signs & Other Advertising Devices; Regulation of Certain Roadways and Bridges; Use of Road Flaggers & Police Details on Public Works Projects; Use of Massachusetts Turnpike & the Metroploitan Highway System;Permitting, Operation & Transport of Overdimensional Loads & Certain Vehicle Trailer Combinations on Certain Mass. Dept. of Transportation Roadways; Driving on State Highways; Maurice J. Tobin Memorial Bridge; Approval of Access to Massachusetts Dept. of Transportation Highways & Other Property; Prequalification of Contractors & Subcontractors.