Section 34020.5 Of Article 2. Regulations From California Vehicle Code >> Division 14.7. >> Article 2.
34020.5
. (a) The Department of Transportation, after consultation
with the Department of the California Highway Patrol, the State Fire
Marshal, and affected local agencies, and following a public hearing
subject to Section 21109.5, may regulate the time when tank vehicles
may travel through a tunnel on state highways.
(b) In evaluating the use of a tunnel on a state highway, the
Department of Transportation shall conduct a traffic and engineering
survey which includes an analysis of the relative risks to public
safety in determining the feasibility of reasonable alternative
routes.
(c) For the purposes of this section, a tunnel is a horizontal
passage enclosed on the sides and top containing a roadway of a
length of not less than 300 feet.
(d) No prohibition or restriction adopted pursuant to this section
shall be effective until appropriate signs have been posted giving
notice thereof to drivers approaching the tunnel.