Section 3546 - Driving through or around safety zone(a) Through zones.--No vehicle shall at any time be driven through or within a safety zone.(b) Around zones.--Traffic may move on either side of a safety zone unless prohibited from driving to the left of the zone by the installation of an official traffic-control device as provided in this title. 1976, June 17, P.L. 162, No. 81, § 1, effective 7/1/1977.