<div class="htmlview paragraph">This paper describes the Advanced Traffic Management Systems [ATMS] element of Intelligent Vehicle-Highway Systems (IVHS). The discussion includes a review of the setting or background in which IVHS/ATMS is being considered; a description of ATMS and its role in the IVHS program; observations on the state of the art and the state of the practice; a scenario for broad scale deployment of the technology; and the benefits that might be achieved from the required investment.</div>