Designing and maintaining intelligent vehicle highway system IVHS security policy.

Advanced traffic management information systems (ATMIS) must rely on computers to process information. The security of any intelligent vehicle highway system depends on protecting computing system assets - data, computing resources, and users - from external threats and internal vulnerabilities. This paper presents a case study of an IVHS security policy designed and maintained in the context of an automated toll collection and accounting system, an exemplary ATMIS technology. A prototype policy workbench is introduced as a means for assisting tool users in working with security policy for large, complex systems. (A)