Source: Oregon DOT — Traffic Signals Engineering page
Publisher: Oregon Department of Transportation
Date Published: January 2026 (Signal Design Manual edition)
Relevant To: Traffic signal / detection infrastructure background
Verification Status: Verified
Notes: Central ODOT resource for signal design standards, approved product lists (Blue Sheets / Green Sheets), and signal approval letters. Companion source: ODOT Signal Design Manual, Chapter 6: Detection (Jan. 2026), which states explicitly: “ODOT’s default standard detection type is radar (includes bike detection). Video detection may also be used with concurrence from the region signal operations engineer.” All non-invasive detection devices must appear on ODOT’s approved Green Sheet product list — see the Blue Sheets and Green Sheets (dynamic PDFs, public documents). These are distinct from automated traffic enforcement/ALPR cameras — traffic signal detection sensors detect vehicle presence for signal timing, though modern devices carry AI classification capability for vehicles, cyclists, and pedestrians. Migrated from the existing Bend Surveillance Oversight source library.