(a) In this subtitle the following words have the meanings indicated.
(b) “Approach” means any roadway, overhead structure, ramp, bridge, causeway, entrance, and exit provided as a means of access to or departure from an Authority highway.
(c) “Authority highway” means:
(1) Each highway, tunnel, and bridge within the jurisdiction of the Maryland Transportation Authority; and
(2) Each approach to these highways, tunnels, and bridges.
(d) “Bridge” means any bridge within the jurisdiction of the Maryland Transportation Authority.
(e) “Tunnel” means:
(1) The Baltimore Harbor Tunnel; and
(2) Any other tunnel within the jurisdiction of the Maryland Transportation Authority.