1. (a) Except at the direction of authorized personnel, vehicular traffic may not cross the double white lines that designate the vehicular traffic lanes in a tunnel.
2. (b) Except at the direction of authorized personnel, trucks and slow moving vehicles may be driven only in the right lane of a tunnel.
3. (c) The driver of a vehicle may not sound his horn or flash his headlights in a tunnel.
4. (d) While in a tunnel, a person may not use any cutout or other device that allows exhaust gases to escape a motor without passing through a muffler or silencer.

Added by Acts 1977, c. 14, § 2, eff. July 1, 1977.

Formerly Art. 66 ½, §§ 11-1407 to 11-1409.