Portland-Vancouver Highway Systems --> I-5 - NB

this material is based upon work supported by the National Science Foundation under Grant No. 0236567, the Oregon Department of Transportation, the Transportation and Research Education Center, the Southwest Washington Regional Transportation Council, the Federal Highway Administration and by grants distributed through Metro. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the funding organizations.