Congestion relief tolling refers to charging drivers a fee that varies with level of traffic (or demand) on a congested tollway. The recent implementation and study of congestion relief tolls in this country are described. Findings are based on focus groups, telephone and personal interviews, a Citizens Jury, and three regional conference held in conjunction with the Federal Highway Administration. The economic rationale for congestion relief tolls and the key reasons why they are being considered by transportation planners and policy makers are outlined. Seven recommendations that address the political and institutional issues associated with building support for implementation are made.