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3 Contents Summary ....................................................................................................................................................... 4 Chapter 1 Research Approach ....................................................................................................................... 6 Chapter 2 Literature Review ......................................................................................................................... 8 Chapter 3 Agency Practices ........................................................................................................................ 11 Chapter 4 Updated Guide ............................................................................................................................ 14 Risk Management and Risk Assessment ............................................................................................ 14 Plans and Strategies ............................................................................................................................ 14 Physical and Cyber Security Countermeasures ................................................................................... 14 Cyber Security .................................................................................................................................... 15 Workforce Planning and Training/Exercises ...................................................................................... 15 Infrastructure Protection and Resilience ............................................................................................. 15 Homeland Security Laws, Directives, and Guidance .......................................................................... 15 Chapter 5 Future Research Needs ............................................................................................................... 16 Appendices A. Literature Review B. Summary of Agency Practices C. Acronyms and Abbreviations D. Glossary Note: This web-only document accompanies NCHRP Research Report 930: Update of Security 101: A Physical and Cyber Security Primer for Transportation Agencies. Readers can read or purchase NCHRP Research Report 930 at www.trb.org.