Design / Operations

Bicycles and Pedestrians

Cyclists and pedestrians are important users of the transportation system. Learn more about traffic signal detection for bicyclists at an intersection, roundabouts and bicycles, and pedestrian countdown signals.

Traffic Control Devices

Traffic Control devices include signs, traffic signals, roadway striping, markings, and devices placed on, or adjacent to, a street or highway by a public body having authority to regulate, warn, or guide traffic.

Roadway Illumination

Illumination and lighting fixtures on county roads must meet specific standards at the time of installation and are typically maintained by Portland General Electric.

Speed Zones

Learn about the establishment of speed zones, installation of speed limit and stop signs along with traffic calming improvements.