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As the technology and system concepts evolve for the Automated Highway System, condition monitoring is playing a significant role. The determination of the capability of a vehicle to enter the highway system, of the highway system to accept it, and in the functional condition of various vehicle and roadside subsystems during operation is dependent upon the monitoring effectiveness. A simple steering failure simulation example indicates the impact on the highway design, the level of redundancy that might be necessary in the vehicle controller, and the capability of the driver to be a part of the fault detection and reconfiguration process.

The objective of the program was to architect a vehicle health management (VHM) system for space systems avionics that assures system readiness for launch vehicles and for space-based dormant vehicles. The platforms which were studied and considered for application of VHM for guidance, navigation and control (GN&C) included the Advanced Manned Launch System (AMLS), the Horizontal Landing-20/Personnel Launch System (HL-20/PLS), the Assured Crew Return Vehicle (ACRV) and the Extended Duration Orbiter (EDO). This set was selected because dormancy and/or availability requirements are driving the designs of these future systems.