Crossing Barriers At the Border Patrol Inspection stations, at the franchise Rest Stops, at the High-Speed Rail stops, and at the U.S.A. / Mexico Highway junctions there will be a need for barriers that will sense a BorderTransportationSystem ID before allowing passage.  These Crossing Barriers can be manufactured as modular units that can be 'plugged' into place where needed.  Each type of crossing barrier will be specifically designed for the intended purpose, and there shall be from one to several spares stored in a border warehouse for use in the event of a failure.  Index of ... EntraPASS Turnstile MSSI- Modular Security Systems, Inc. Online River Unipart Rail