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.

• Bicycle and Pedestrian Information
  
  

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.

• Signing and Striping Information
• Traffic Signal Information
  
  

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.

• Roadway Illumination Information
  
  

Speed Zones

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

• Speed Zones and Speed Limit Sign Information 
• Traffic Calming Information 
• Neighborhood Streets Program Information