- What Is the Accredited Traffic Accident Reconstructionist Credential?
- Exam Structure: Theory and Practical Parts
- Eligibility, Application, and Deadlines
- Fees and Cost Mechanics
- Scoring Rules and Passing Requirements
- Permitted Materials and Testing Conditions
- Who Hires ACTAR-Accredited Reconstructionists
- Building a Study Timeline Around Two Testing Parts
- Renewal, CEUs, and Maintaining Accreditation
- Frequently Asked Questions
- ACTAR's exam has 100 questions total: 75 theory and 25 practical, plus a scaled diagram, across two four-hour parts.
- Candidates must score at least 75% on each part separately - no averaging between Theory and Practical.
- Application costs $175-$200 and the exam fee is $75-$125 depending on membership in a participating organization.
- Applications are due at least 60 days before the exam; registration closes at least 30 days out.
What Is the Accredited Traffic Accident Reconstructionist Credential?
The Accredited Traffic Accident Reconstructionist designation is issued by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR), the organization that acts as the sole gatekeeper for this credential. Unlike certifications that test broad knowledge across many weighted subject areas, ACTAR accreditation is built around a single in-person, proctored examination split into two distinct scored parts. If you're researching this credential for the first time, our overview of what Accredited Traffic Accident Reconstructionist actually means and how the term is used in the crash reconstruction field is a useful starting point before diving into exam mechanics.
Because ACTAR is the identifier you'll see referenced across prep guides, application checklists, and CEU documentation, always search "ACTAR" directly rather than the full acronym when looking for official materials. This matters because several other credentials share similar-sounding names, and mixing up sources can lead candidates to study the wrong content entirely.
Exam Structure: Theory and Practical Parts
The ACTAR examination is organized into two separately scored parts rather than percentage-weighted domains. Each part functions as its own gate - you must clear both, not just achieve a combined average. For a deeper breakdown of what each part actually covers, see our complete guide to all Accredited Traffic Accident Reconstructionist exam domains.
Domain 1: Theory Examination (Part 1)
This part contains 75 questions delivered as multiple-choice, true/false, and calculation-based items. Candidates are tested on the principles underlying crash reconstruction rather than being asked to produce a physical diagram.
- Multiple-choice and true/false items covering reconstruction theory
- Calculation questions requiring correct numerical answers with proper units
- Four hours allotted for this part
Domain 2: Practical Examination (Part 2)
This part consists of 25 questions built around a controlled-crash case study, plus a scaled diagram that candidates must produce manually. It tests the ability to apply reconstruction methodology to a real scenario rather than recall isolated facts.
- Controlled-crash case analysis with supporting data
- Manual reconstruction diagram drawn to scale
- Four hours allotted, separate from the Theory part
Because numerical answers on both parts require correct units and ACTAR's specified reporting precision, and because answer ranges are marked incorrect, candidates need to internalize exact calculation habits well before test day. Our detailed breakdown of the passing score requirements explains exactly how this precision standard affects scoring.
Eligibility, Application, and Deadlines
ACTAR does not allow candidates to simply register and sit for the exam. Eligibility is approved in advance based on documented training, education, and experience, along with at least three references who can speak to a candidate's reconstruction background. This vetting step exists because the credential is meant to reflect demonstrated field competency, not just exam readiness.
- Applications must be submitted at least 60 days before the intended exam date
- Registration for a confirmed seat must be completed at least 30 days before the exam
- Approval requires documented experience, education, and a minimum of three references
If you're unsure whether your background qualifies, our full Accredited Traffic Accident Reconstructionist requirements guide walks through the eligibility documentation ACTAR expects in detail. Candidates should also check the specific exam dates and testing windows early, since the 60-day and 30-day deadlines can eliminate an upcoming sitting if missed.
Key Takeaway
Start your application well before you feel "exam ready." The 60-day submission window means eligibility approval, not study completion, is often the real bottleneck for first-time candidates.
Fees and Cost Mechanics
ACTAR structures its costs around two separate payments: a nonrefundable application fee and a distinct examination fee. Both amounts differ depending on whether the candidate belongs to an ACTAR participating organization.
| Fee Type | Participating Organization Members | Other Candidates |
|---|---|---|
| Application Fee (nonrefundable) | $175 | $200 |
| Examination Fee | $75 | $125 |
Because the application fee is nonrefundable regardless of outcome, candidates should confirm their eligibility documentation is complete before submitting. For a full walkthrough of every cost involved - including renewal and retake fees - see our complete pricing breakdown for Accredited Traffic Accident Reconstructionist certification.
Scoring Rules and Passing Requirements
ACTAR's scoring model is stricter than many professional exams because it evaluates the two parts independently rather than blending them into one composite score.
- Candidates must score at least 75% on the Theory part and at least 75% on the Practical part
- No partial credit is awarded on any question type
- Calculation answers must include correct units and match ACTAR's specified reporting precision
- Answer ranges, rather than exact values, are marked incorrect
If you want a sense of how demanding this dual-part, no-partial-credit structure feels in practice, our difficulty guide to the Accredited Traffic Accident Reconstructionist exam breaks down where candidates most often lose points. You may also want to review what the available pass rate data shows before finalizing your study timeline.
Permitted Materials and Testing Conditions
ACTAR allows candidates to bring physical reference materials into the testing room, but with specific limits designed to prevent electronic assistance.
- Printed, bound references are permitted
- Laminated or sleeved resource pages secured inside binders are allowed
- Approved calculators and manual drawing tools may be used
- Computers, phones, smartwatches, and any electronic reference files are prohibited
Because approved calculator models are specified in the June 2026 preparation guide, candidates should confirm their device against that list well before exam day rather than assuming a familiar calculator will be accepted. Manual drawing tools matter just as much as calculators given the scaled diagram requirement on the Practical part.
Who Hires ACTAR-Accredited Reconstructionists
Accreditation signals to employers and courts that a reconstructionist has met an external, examination-based standard rather than relying solely on in-house training. Professionals holding this accreditation typically work in roles where reconstruction findings must withstand scrutiny - law enforcement crash investigation units, private forensic engineering firms, insurance special investigation units, and independent expert witness practices that testify in litigation.
Because the credential carries weight in legal and insurance contexts, hiring managers in these fields often treat ACTAR accreditation as a differentiator on a resume. If you're weighing whether pursuing it fits your career path, our earnings analysis for accredited reconstructionists and our broader ROI analysis of the certification both address how the credential is valued in the job market. You can also browse current Accredited Traffic Accident Reconstructionist job listings to see how the credential is referenced in postings.
Building a Study Timeline Around Two Testing Parts
Because Theory and Practical are scored independently, an effective study plan treats them as two separate preparation tracks rather than one combined review. Spaced repetition works well for Theory's calculation formulas and terminology, while the Practical part benefits more from repeated, timed practice diagramming controlled-crash scenarios by hand.
Theory Foundations
- Drill multiple-choice and true/false content areas from the preparation guide
- Practice calculation questions with strict attention to units and precision
Practical Application
- Work through controlled-crash case studies under timed conditions
- Practice manual scaled diagrams repeatedly using approved drawing tools
Full Simulation
- Run full four-hour timed sessions for each part separately
- Confirm your calculator and reference binder meet permitted-materials rules
For a more detailed week-by-week approach tailored to first-attempt success, see our full Accredited Traffic Accident Reconstructionist study guide for 2026. Many candidates also keep a condensed one-page review of must-know facts handy during the final review phase, and running timed questions on our practice test platform can help you gauge readiness on both parts before committing to an exam date.
Renewal, CEUs, and Maintaining Accreditation
Accreditation is not permanent - it must be renewed every five years. ACTAR offers two paths to maintain your credential:
- Earn 80 ACTAR CEUs and pay a $325 renewal fee, or
- Successfully retake the complete exam for $325 as an alternative to the CEU route
This structure means reconstructionists must stay engaged with ongoing education or be prepared to demonstrate competency again through the full two-part exam. Planning CEU activity early in each five-year cycle helps avoid a last-minute scramble or an unplanned retake.
Key Takeaway
Track your five-year renewal window from the date of initial accreditation, and start logging CEU-eligible activities immediately rather than waiting until the deadline approaches.
If your initial two-year eligibility period expires before you pass both parts, the guide permits one additional two-year period on request and payment, still capped at three attempts, and both parts remain required regardless of any earlier partial success on one part alone.
Frequently Asked Questions
The exam totals 100 questions: 75 theory questions on Part 1 and 25 practical questions plus a scaled diagram on Part 2, per the preparation guide effective June 1, 2026.
You must score at least 75% on each part separately. There is no averaging - a strong Theory score cannot offset a below-threshold Practical score, or vice versa.
Initial eligibility lasts two years with up to three attempts. One additional two-year period can be requested and paid for if needed, still limited to three attempts, with both parts required regardless of earlier partial success.
No. Computers, phones, smartwatches, and electronic reference files are prohibited. Only printed bound references, laminated or sleeved pages secured in binders, approved calculators, and manual drawing tools are permitted.
Renewal occurs every five years and requires either 80 ACTAR CEUs plus a $325 renewal fee, or successfully retaking the complete exam for $325 as an alternative.