Accomplishments in freeway operation in the United States. Paper presented at the 50th Annual Meeting of the Highway Research Board HRB, Washington, D.C., January 1971.

Operational experience in freeway operations in the U.S. are summarized. Appraisals of accomplishments in areas of improved freeway designs, surveillance and control, secondary benefits of surveillance and control, and improved safety, are presented. Among the benefits from these accomplishments are reduced delay and travel time, increased safety, and improved service to motorists.