Airport roadway and terminal curb congestion are fast becoming a critical constraint at many high-volume US airports. Despite much research on methods to improve HOV and transit ground access modes, geographically distributed local trip origins and the ubiquity of low-cost private vehicle modes of access continue to inhibit meaningful HOV access to congested airports. In recent years new express lane tolling innovations have provided congestion relief on some heavily used urban highways and congestion pricing is being applied at densely congested urban centers. Unfortunately, physical constraints on airport roadways and terminal curbs have, to date, precluded the use of congestion pricing to regulate curb access by low occupancy private vehicles. Private vehicles are the only access mode given unrestricted access to congested terminal curbs without incurring any charges. This project will explore alternatives to reduce terminal curb congestion and enhance HOV access to airports.