ACTAR Cheat Sheet 2026

The 30 highest-yield ACTAR facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which evidence type helps determine crash severity? → Crush damage measurements
2. What role does collaboration play in photogrammetry for ACTAR professionals? → It enhances outcomes through diverse perspectives and shared expertise
3. When a ACTAR professional makes an error in documentation, the CORRECT procedure is to: → Draw a single line through the error, initial, date, and write the correction
4. In ACTAR practice, what is the best approach to quality improvement in human factors? → Use data-driven methods with measurable outcomes
5. Why is drag factor important? → It influences deceleration rate
6. How is kinetic energy calculated? → velocity / time
7. How long should ACTAR professionals typically retain official documentation and records? → According to applicable regulatory requirements and organizational policies
8. What is the value of continuing education in human factors for ACTAR professionals? → It keeps professionals current with evolving standards and practices
9. In ACTAR practice, what is the best approach to quality improvement in scene documentation? → Use data-driven methods with measurable outcomes
10. Which evidence type is critical for time-distance analysis? → Skid marks
11. What is the PRIMARY purpose of obtaining ACTAR certification in Accreditation Commission for Traffic Accident Reconstructionist? → To demonstrate verified competency and adherence to professional standards
12. How long should ACTAR professionals typically retain official documentation and records? → According to applicable regulatory requirements and organizational policies
13. What is the most important professional competency for ACTAR certification in photogrammetry? → Deep knowledge combined with practical application skills
14. Why is mass distribution crucial? → To ensure handling and balance
15. Which professional attribute is most valued in crash dynamics within the ACTAR field? → Accountability and commitment to standards
16. Which regulatory requirement is UNIVERSAL across all Accreditation Commission for Traffic Accident Reconstructionist practice settings? → Maintaining current certification and meeting continuing education requirements
17. Under FHWA minimum retroreflectivity guidelines, what is the minimum retroreflectivity level for white pavement markings? → 100 mcd/m²/lux
18. The term 'conspicuity' in accident reconstruction refers to: → The ease with which an object can be detected and recognized by a driver
19. Which professional attribute is most valued in roadway analysis within the ACTAR field? → Accountability and commitment to standards
20. What unit is acceleration typically measured in? → Feet per second squared
21. What role does mass play in crash energy? → Increases kinetic energy
22. Which approach best demonstrates mastery of vehicle damage analysis in ACTAR practice? → Applying principles to novel situations with sound judgment
23. What is the value of continuing education in scene documentation for ACTAR professionals? → It keeps professionals current with evolving standards and practices
24. When conducting a risk assessment for ACTAR operations, which factor should receive the HIGHEST priority? → Probability and severity of potential harm
25. Which unit is used to measure the retroreflectivity of pavement markings in traffic engineering and accident reconstruction? → Millicandela per square meter per lux (mcd/m²/lux)
26. What tool is commonly used for measuring skid marks? → Measuring wheel or tape
27. In ACTAR practice, what is the best approach to quality improvement in evidence collection? → Use data-driven methods with measurable outcomes
28. When a ACTAR professional makes an error in documentation, the CORRECT procedure is to: → Draw a single line through the error, initial, date, and write the correction
29. How is vehicle position marked on roadways? → With chalk or paint
30. The 'nighttime viewing distance' for a stationary object in a roadway depends LEAST on which of the following? → The ambient air temperature at the accident scene