U.S. Department of Transportation

• US DOT
• US DOT Federal ITS Program
• US DOT Agencies
• State Transportation Websites
• National ITS Architecture
• FHWA Resource Center
• FHWA Office of Operations

ITS Standards Community

• Aurora Program
• Data Interchange Standards Association (DISA)
• Enterprise Program
• I-95 Corridor Coalition
• IDB Forum
• Integrating NTCIP Compliant Hardware (INCH) Project
  — click on "Projects", "Completed Projects", "Inch (NTCIP)"
• ITS America
• ITS Cooperative Deployment Network (NTOC)
• National Transportation Communications for ITS Protocol (NTCIP)
• Security Industry Association (SIA)
• Telecommunications Industry Association (TIA)

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Standards Development Organizations

• American Association of State Highway and Transportation Officials (AASHTO)
• American National Standards Institute (ANSI)
• American Public Transportation Association (APTA)
• ASTM International
• Institute of Electrical and Electronics Engineers (IEEE)
• Institute of Transportation Engineers (ITE)
• International Organization for Standardization (ISO)
• National Electrical Manufacturers Association (NEMA)
• Society of Automotive Engineers (SAE)
• ITS Standards Working Group/Development Activities