Studies & Evaluations

• Evaluation of Renton Ramp Meters on I-405 (pdf 253 kb)
• SR 520 Eastbound Morning Ramp Metering (pdf 161 kb)
• SR 520 Westbound Ramp Meter Effects (pdf 817 kb)
• Merging Conflict Study for SR 167 (pdf 17 kb)
• Evaluation of a Fuzzy Logic Ramp Metering Logarithm (pdf 400 kb)

Publications & Handouts

• I-405 Ramp Meters: Go With the Flow (pdf 263 kb)