- FHWA. Top Ten Characteristics of a Successful State Highway Safety Improvement Program. Available online at safety.fhwa.dot.gov/hsip/resources/characteristics10.cfm. Accessed February 24, 2016.
- Alaska DOT&PF. Statewide Design and Engineering Services. Available online at dot.alaska.gov/stwddes/dcstraffic/hsip.shtml. Accessed February 24, 2016.
- Illinois DOT. Safety Engineering Policy Memorandum. Available online at idot.illinois.gov/Assets/uploads/files/Transportation-System/Manuals-Guides-"&"-Handbooks/Safety/SAFETY%201.06%20-%20Safety%20Engineering%20Policy%20Memorandum.pdf. Accessed February 24, 2016.
- Utah DOT. Highway Safety Improvement Program Manual. Available online at udot.utah.gov/main/uconowner.gf?n=3562132679126905. Accessed February 24, 2016.
- Oregon DOT. ODOT Highway Safety Program Guide. Available online at oregon.gov/odot/hwy/traffic-roadway/docs/pdf/odot_safety_program_guide.pdf. Accessed February 24, 2016.
- North Carolina DOT. Highway Safety Improvement Program: Safety Warrants. Available online at connect.ncdot.gov/resources/safety/HSIP%20Library/2013%20HSIP%20Warrants.pdf. Accessed February 24, 2016.
- North Carolina DOT. North Carolina Project Development Crash Reduction Factor Information. Available online at connect.ncdot.gov/resources/safety/TrafficSafetyResources/NCDOT%20CRF%20Update%20with%20References.pdf. Accessed February 24, 2016.
- North Carolina DOT. Highway Safety Programs and Projects. Available online at connect.ncdot.gov/resources/safety/Pages/NC-Highway-Safety-Program-and-Projects.aspx. Accessed February 24, 2016.
- Oregon DOT. Traffic-Roadway Section (TRS) – All Roads Transportation Safety. Available online at oregon.gov/ODOT/HWY/TRAFFIC-ROADWAY/Pages/ARTS.aspx. Accessed February 24, 2016.
- MassDOT. Highway Safety Improvement Program. Available online at massdot.state.ma.us/highway/Departments/TrafficandSafetyEngineering/HighwaySafety/HighwaySafetyImprovementProgram.aspx. Accessed February 24, 2016.
- IDOT. Safety Portal Crash Manager Guide. Available online at idot.illinois.gov/Assets/uploads/files/Transportation-System/Manuals-Guides-%26-Handbooks/Safety/IDOT_Safety_Portal_Data_Crash_Manager_Guide.pdf. Accessed February 24, 2016.
- massDOT. Crash Records Web Reporting. Available online at services.massdot.state.ma.us/crashportal/. Accessed February 24, 2016.
- Illinois DOT. Highway Safety Improvement Program (HSIP). Available online at idot.illinois.gov/transportation-system/local-transportation-partners/county-engineers-and-local-public-agencies/funding-opportunities/highway-safety-improvement-program. Accessed February 24, 2016.
- Illinois DOT. Highway Safety Improvement Program Policy. Available online at idot.illinois.gov/Assets/uploads/files/Transportation-System/Manuals-Guides-"&"-Handbooks/Safety/SAFETY%201.06%20-%20Safety%20Engineering%20Policy%20Memorandum.pdf. Accessed March 14, 2016.
- Alaska DOT&PF. Alaska HSIP Handbook. Available online at dot.alaska.gov/stwddes/dcstraffic/assets/pdf/hsip/hsip_hdbk_010116.pdf. Accessed March 14, 2016.
- MassBike. MassBike Releases Bike Safety Training Video for Police Departments. Available online at massbike.org/blog/2014/05/07/massbike-releases-bike-safety-training-video-for-police-departments/. Accessed February 24, 2016.
- massDOT. massDot Highway Division – Road Safety Audits. Available online at massdot.state.ma.us/highway/Departments/TrafficandSafetyEngineering/HighwaySafety/RoadSafetyAudits.aspx. Accessed February 24, 2016.
- Alaska DOT&PF. Report Every Dangerous Driver Immediately. Available online at dot.state.ak.us/highwaysafety/REDDI.shtml. Accessed February 24, 2016.
- Alaska DOT&PF. Highway Safety Publications. Available online at dot.state.ak.us/highwaysafety/pubs.shtml. Accessed February 24, 2016.
- North Carolina DOT. Safety Evaluation Group – Safety Evaluation Completed Projects. Available online at connect.ncdot.gov/resources/safety/Pages/Safety-Evaluation.aspx. Accessed February 24, 2016.