Recently, excessive amounts of parking search time has been identified as a significant contributor to urban congestion and as an important influence in destination choice, in particular for shopping. Systems designed to provide travelers with improved information on the parking system have the potential to reduce parking congestion by enabling more efficient use of existing capacity. The provision of broadcast information on parking is a logical addition to general traffic announcements. A number of DRIVE II projects have included this task into their work programmes (see Keller, 1993). This paper reports on results from two recent studies conducted in Nottingham and Frankfurt am Main utilizing PGI (Parking Guidance and Information) and VMS (variable message signs).