SUBCHAPTER B TRAFFIC-CONTROL DEVICES Sec. 6121. Uniform system of traffic-control devices. 6122. Authority to erect traffic-control devices. 6123. Erection of traffic-control devices while working. 6123.1. Mandatory traffic-control devices in highway work zones. 6124. Erection of traffic-control devices at intersections. 6125. Display of unauthorized signs, signals or markings. 6126. Interference with devices, signs or signals. 6127. Dealing in nonconforming traffic-control devices. 6128. Dealing in official traffic-control devices or bridge parts. 6129. Maintenance of pedestrian crosswalks in school zones. § 6121. Uniform system of traffic-control devices. The department shall publish a manual for a uniform system of traffic-control devices consistent with the provisions of this title for use upon highways within this Commonwealth. The uniform system shall correlate with and so far as possible conform to the system set forth in the most recent edition of the Manual on Uniform Traffic-Control Devices for Streets and Highways and other standards issued or endorsed by the Federal Highway Administrator, United States Department of Transportation.

SUBCHAPTER B TRAFFIC-CONTROL DEVICES Sec. 6121. Uniform system of traffic-control devices. 6122. Authority to erect traffic-control devices. 6123. Erection of traffic-control devices while working. 6123.1. Mandatory traffic-control devices in highway work zones. 6124. Erection of traffic-control devices at intersections. 6125. Display of unauthorized signs, signals or markings. 6126. Interference with devices, signs or signals. 6127. Dealing in nonconforming traffic-control devices. 6128. Dealing in official traffic-control devices or bridge parts. 6129. Maintenance of pedestrian crosswalks in school zones. § 6121. Uniform system of traffic-control devices. The department shall publish a manual for a uniform system of traffic-control devices consistent with the provisions of this title for use upon highways within this Commonwealth. The uniform system shall correlate with and so far as possible conform to the system set forth in the most recent edition of the Manual on Uniform Traffic-Control Devices for Streets and Highways and other standards issued or endorsed by the Federal Highway Administrator, United States Department of Transportation.