in 1970 was a success. What set Aramis apart from other personal rapid transit projects were non-material couplings. Non-material couplings were linking elements that would allow each vehicle to be self-contained, while moving in unison. Unlike trains, individual Aramis were not physically attached. The 1972 prototype featured a piece of track 800–1000 meters long, a fixed station, a movable station that would have included a workshop, a control post, a reception building, a parking lot, and five full scale cars (two for passengers, three reserved for measuring instruments). Social concerns made the development of Aramis difficult; the safety of passengers was at risk because of the lack of security in private cars. Point-to-point travel for passengers, an essential feature of Personal Rapid Transit, was removed from the specifications around 1973 because of the extra cost of the turnouts. Notes References Bibliography Aramis or the Love of Technology, by Bruno Latour (Harvard University Press, 1996) External links Article about ARAMIS on « metro-pole.net » Ad for Aramis (archive) Personal rapid transit Rubber-tyred metros