Freight transportation makes up a substantial portion of the daily vehicle miles traveled (VMT) in the Portland metropolitan area and is vital for the region’s economic vitality. Further, truck movements on the Portland area freeway system are impacted heavily by congestion and in turn have a major safety impact. The intent of this project is to manage and monitor the movement of vehicles on the freeway system on an ongoing basis using dual loop detectors that are able to classify vehicles by their type.