Abstract
Alinea, a new local traffic-responsive strategy for ramp metering, is presented. The new control strategy is based on a feedback structure and is derived by use of classical automatic control methods.Alinea is a simple, robust, flexible, and effective local strategy for ramp metering. Real-life results from application of the new strategy to a single on-ramp of the boulevard peripherique in paris areprovided. This paper appears in transportation research record no. 1320, Freeway operations, highway capacity, and traffic flow 1991.