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Personal communication systems (PCS) maintain a location management mechanism for tracking the location of their mobile users. The increasing population of mobile users leads to congestion problems in these systems, and motivates the development of more efficient management schemes. This work presents a new mobility management scheme that integrates the location area approach with the location prediction idea. It is based on results from traffic flow theory and it is first that uses the concept of moving location areas. Traffic flow theory suggests that people tend to reside in specific places for long periods of time. Occasionally, they move to new locations and try to minimize the travel time using highways as much as possible. The scheme uses two complementary sets of location areas that overlap each other. The first set contains small location areas and is designated for locating mobile users in a quasi …