Motor vehicles, semitrailers, trailers more than 96 inches but not more than 102 inches in width, and motor vehicles pulling tandem trailers may use the Baltimore Harbor Tunnel Thruway from the Child Street entrance ramp in a southbound direction only. Motor vehicles, semitrailers, trailers more than 96 inches but not more than 102 inches in width, and motor vehicles pulling tandem trailers may use the Baltimore Harbor Tunnel Thruway in a northbound direction, but shall exit at the Child Street exit ramp, subject to the following conditions: The person or entity desiring to use the northbound Baltimore Harbor Tunnel Thruway shall make a written request for a hauling permit to the Maryland State Highway Administration as specified in COMAR 11.04.01; The permit may be granted at the discretion of the Maryland Transportation Authority, and shall be for a specific duration as established by the Maryland Transportation Authority; The permit is revocable whenever the Maryland Transportation Authority believes it is necessary to safeguard Maryland Transportation Authority property and employees, the traveling public, or the adjacent communities; and The Maryland State Highway Administration’s and Maryland Transportation Authority's decision issuing or denying a permit is final.