Model Systems Engineering Documents for Central Traffic Signal Systems

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Contact Information: Operations Feedback at OperationsFeedback@dot.gov

U.S. Department of Transportation
Federal Highway Administration
Office of Operations
1200 New Jersey Avenue, SE
Washington, DC 20590

FHWA-HOP-19-019

August 2019

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Table of Contents

[ Notice and Quality Assurance Statement ] | [ Technical Report Documentation Page ] | [ List of Abbreviations and Acronyms ]

• Executive Summary
  • Part of an ITS Implementation Process
  • What the User Will Do
  • Procurement Support
• Chapter 1. Concept of Use
  • Purpose
  • Process
  • Concept of Operations
  • Requirements Document
  • Verification Plan
  • Validation Plan
  • Procurement
  • Assembling your Documents
  • Summary
• Chapter 2. Concept of Operations Guidance
  • Scope (Chapter 1 of the Concept of Operations Document)
  • Referenced Documents (Chapter 2 of the ConOps Document
  • User-Oriented Operational Description (Chapter 3 of the ConOps Document)
  • Operational Needs (Chapter 4 of the ConOps Document)
  • Envisioned CTSS System Overview (Chapter 5 of the ConOps Document)
  • CTSS System Operational Environment (Chapter 6 of the ConOps Document)
  • CTSS Support Environment (Chapter 7 of the ConOps Document)
  • Proposed Operational Scenarios Using a CTSS (Chapter 8 of the ConOps Document)
• Chapter 3. System Requirements Guidance
  • Scope of System of Sub-System (Chapter 1 of the Requirements Document)
  • References (Chapter 2 of the Requirements Document)
  • Requirements (Chapter 3 of the Requirements Document)
  • Verification Methods (Chapter 4 of the Requirements Document)
  • Supporting Documentation (Chapter 5 of the Requirements Document)
  • Traceability Matrix (Chapter 6 of the Requirements Document)
  • Glossary (Chapter 7 of the Requirements Document)
• Chapter 4. Verification Plan Guidance
  • Purpose of the Document (Chapter 1 of the Verification Plan Document)
  • Scope of Project (Chapter 2 of the Verification Plan Document)
  • Referenced Documents (Chapter 3 of the Verification Plan Document)
  • Conducting Verification (Chapter 4 of the Verification Plan Document)
  • Verification Identification (Chapter 5 of the Verification Plan Document)
• Chapter 5. Validation Plan Guidance
  • Purpose of the Document (Chapter 1 of the Validation Plan Document)
  • Scope of Project (Chapter 2 of the Validation Plan Document)
  • Referenced Documents (Chapter 3 of the Validation Plan Document)
  • Conducting Validation (Chapter 4 of the Validation Plan Document)
  • Validation Identification (Chapter 5 of the Validation Plan Document)
• Chapter 6. Purchasing a System Using Systems Engineering Documents
  • Traditional Approaches are Risky for Technology Projects
  • Reducing Risk Using Requirements
  • Reducing Risk Further by Using Requirements for Selection
  • Sole-Source Acquisitions
  • Services and Infrastructure
• Appendix A: Concept of Operations Table of the Sample Statements
• Appendix B: System Requirements Table of Sample Statements
• Appendix C: Suggested Requirements Verification Methods
• Appendix D: Verification Plan Sample Cases
• Appendix E: Validation Plan Sample Cases
• Appendix F: Standardized Communications Protocol Stack Interface Diagrams
• Appendix G: Glossary
• Appendix H: Acknowledgements

List of Figures

• Figure 1. Reference Architecture for a Central Traffic Signal System with the scope of the CTSS Model SE Documents
• Figure 2. Concept of Use Process for SE Model Documents
• Figure 3. High-Level Representative CTSS Project Architecture Diagram
• Figure 4. Sample Communications Protocol Standards for the NTCIP-SNMP Triple of External System → video surveillance control → External System Cameras based on the CCTV System Project Architecture Diagram
• Figure 5. Consumer Reports acquisition approach
• Figure 6. Low-bid process supported by requirements
• Figure 7. RFP-based technical selection acquisition process
• Figure 8. Complex project with both system services and infrastructure, and both pilot and full implementation phases
• Figure 9. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal System → traffic detector control → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 10. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal System → traffic detector control → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 11. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal Field Equipment → traffic detector data → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 12. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal Field Equipment → traffic detector data → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 13. Communications Protocol Standards Example for the XML Triple of Traffic Signal System → road network conditions → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 14. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of Traffic Signal System → road network conditions → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 15. Communications Protocol Standards Example for the XML Triple of External Traffic Signal System → road network conditions → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 16. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of External Traffic Signal System → road network conditions → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 17. Communications Protocol Standards Example for the RSE Field to Field Triple of Railroad Field Equipment → track status → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 18. Communications Protocol Standards Example for the RSE Field to Field Triple of Traffic Signal Field Equipment → rail crossing operational status → Railroad Field Equipment based on the CTSS Project Architecture Diagram
• Figure 19. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal Field Equipment → signal control status → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 20. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal Field Equipment → signal control status → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 21. Communications Protocol Standards Example for the XML Triple of Traffic Signal System → device data → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 22. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of Traffic Signal System → device data → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 23. Communications Protocol Standards Example for the XML Triple of External Traffic Signal System → device data → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 24. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of External Traffic Signal System → device data → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 25. Communications Protocol Standards Example for the XML Triple of Traffic Signal System → device status → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 26. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of Traffic Signal System → device status → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 27. Communications Protocol Standards Example for the XML Triple of External Traffic Signal System → device status → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 28. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of External Traffic Signal System → device status → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 29. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal System → traffic detector control → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 30. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal System → signal control commands → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 31. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal System → signal control device configuration → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 32. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal System → signal control device configuration → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 33. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal System → signal control plans → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 34. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal System → signal control plans → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 35. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal System → signal system configuration → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 36. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal System → signal system configuration → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 37. Communications Protocol Standards Example for the Legacy Short Range Communications Triple of Public Safety Vehicle → local signal preemption request → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 38. Communications Protocol Standards Example for the Legacy Short Range Communications Triple of Transit Vehicle → local signal priority request → Traffic Signal Field Equipment based on the CTSS Project Architecture Diagram
• Figure 39. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal Field Equipment → local signal preemption request → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 40. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal Field Equipment → right-of-way request notification → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 41. Communications Protocol Standards Example for the XML Triple of Traffic Signal System → device control request → External Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 42. Communications Protocol Standards Example for the XML Triple of External Traffic Signal System → device control request → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 43. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of External Traffic Signal System → device control request → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 44. Communications Protocol Standards Example for the NTCIP-STMP Triple of Traffic Signal Field Equipment → signal fault data → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 45. Communications Protocol Standards Example for the NTCIP-SNMP Triple of Traffic Signal Field Equipment → signal fault data → Traffic Signal System based on the CTSS Project Architecture Diagram
• Figure 46. Communications Protocol Standards Example for the NTCIP-DATEX-ASN Triple of Traffic Signal System → device control request → External Traffic Signal System based on the CTSS Project Architecture Diagram