

We specialize in remote, photograph‑based collision analysis. Our work focuses on desktop reviews—transforming images and documentation into objective, defensible assessments of delta‑V, g‑forces, and injury probability for insurers, attorneys, and private clients. Get a free quote now!

Our background includes extensive, real‑world law‑enforcement experience investigating fatal, serious‑injury, and non‑injury collisions. We have conducted hands‑on scene work, vehicle examinations, and full‑scale investigations—experience that cannot be replicated by classroom‑only training or analysts who have never responded to an actual crash. Although our current services are delivered entirely through desktop review, that field‑tested foundation informs every analysis. We apply established principles of physics, vehicle dynamics, and crash analysis to deliver clear, defensible findings for every case.

Desktop‑Only Accident Reconstruction & Analysis
Precision Collision Analysis provides remote, photograph‑ and document‑based accident reconstruction for attorneys, insurers, and private clients throughout the US. Every case is evaluated using a structured, scientific methodology designed to clarify what happened, how it happened, and whether the physical evidence supports the reported sequence of events.
What Is Accident Reconstruction?
Accident reconstruction is a disciplined, physics‑based process used to determine the most plausible sequence of events in a collision. Even without a scene inspection, a great deal can be established from:
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Final rest positions
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Vehicle damage patterns
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Scene photographs
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Police reports and diagrams
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Repair estimates
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Witness statements
By analyzing these established data points, a reconstructionist can assess vehicle dynamics, impact orientation, closing speeds, and the likelihood that the reported scenario aligns with the physical evidence and/or injuries.
Event Data Recorder (EDR) downloads—when available—provide an additional layer of insight. These onboard systems may record pre‑impact speed, throttle and brake inputs, steering behavior, and airbag deployment data. When included in a desktop review, EDR data helps corroborate or challenge statements and reported actions.
Our Reconstruction Process
Precision Collision Analysis specializes exclusively in remote, desktop‑based evaluations. Every case is approached with the same structured workflow:
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Review and organize all available photographs and documentation
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Identify damage patterns, height‑band alignment, and contact geometry
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Evaluate vehicle dynamics using accepted reconstruction principles
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Compare physical evidence to the reported sequence of events
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Estimate impact severity, including speed, delta‑V, and occupant loading (when supported by evidence)
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Document uncertainties, limitations, and alternative plausible scenarios
This approach allows for clear, defensible conclusions without the delays or costs associated with on‑scene inspections.
Who Performs the Analysis?
Your case is evaluated by a collision reconstructionist with extensive experience in both accident reconstruction and real‑world law enforcement. This background includes responding to and investigating thousands of traffic collisions—from minor impacts to fatal crashes—providing a depth of practical insight that classroom‑only training cannot replicate. That field‑tested foundation now informs a disciplined, desktop‑based approach, ensuring every analysis is grounded in how collisions actually occur, not just how they are taught in theory.
Why Accident Reconstruction Matters
Accident reconstruction is especially valuable when:
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Liability is disputed
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Statements conflict
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Damage patterns appear inconsistent with the reported events
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Injury claims require context regarding impact severity
A structured desktop review can help answer key questions such as:
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Is the reported sequence of events consistent with the physical evidence?
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At fault vehicles?
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Are the claimed speeds or actions plausible?
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What does the damage indicate about impact severity and occupant loading?
Precision Collision Analysis provides clear, evidence‑based assessments that help clients understand what the physical evidence supports—and what it does not.
TESTIMONIAL
My name is Daniel Gonzalez, 76, and I am a pro se plaintiff in a contentious personal injury case. I am honored and privileged to express my unending appreciation for the expertise and professionalism Investigator Zachary Sprague demonstrated in preparing my report to win my case. I cannot recommend a better person, and the cost value for his service is unmatched anywhere.
This testimonial is written without any payment or promise of payment to me from Zachary in any manner. This letter is intended especially for anyone serious about presenting a top-level forensic accident reconstruction report successfully, in a jury- or court-friendly format, delivered in a clear, easy-to-understand manner.
Zachary is a thoroughly extraordinary, kind, and genuine person, especially at a time when I was completely helpless and in serious danger of losing my case, and more importantly, my credibility. While Zachary generally works with attorneys and other professionals, he possesses that unique human quality of helping those who cannot afford the more expensive legal expert services. He is a gift and blessing to the less fortunate who still believe that our justice system can operate with the highest integrity.
If anyone has any doubt about whether Zachary can do the same for you, please do yourself and your case a huge favor and contact him. I am certain you will find, as I did, that he is the finest and most courteous accident reconstructionist anywhere.
Eternally and profoundly grateful,
Daniel Gonzalez
A pro se client
About your Analyst
Sprague has extensive experience investigating major traffic collisions through a career in law enforcement. He brings that real‑world investigative background to Precision Collision Analysis, where he provides top‑tier, evidence‑driven collision analysis for attorneys and insurance professionals. His work reflects a disciplined approach, clear communication, and a commitment to delivering objective, defensible findings on every case. His on‑scene investigative background offers a level of practical insight that classroom‑trained analysts alone cannot match.

Our Services
All collision evaluations are performed remotely through comprehensive Desktop Reviews. By relying on photographs and documentation rather than in‑person inspections, we provide a cost‑effective, efficient, and technically rigorous approach to collision analysis.
Damage
Analysis
Damage assessments are performed remotely through analysis of photographs and repair estimates, providing clients answers to their questions regarding facts of loss and reported collision scenarios.
Delta-V
Calculations
We calculate Delta V to quantify changes in vehicle velocity during impact—an essential metric for understanding crash severity, occupant loading, energy transfer and probability of injuries. This is done through photograph analysis, damage estimates and EDR reports.
Injury‑Probability Assessment
Our opinions regarding the probability of injury are grounded in established biomechanical research, drawing on peer‑reviewed SAE studies and related scientific literature. All injury‑probability assessments are developed through this evidence‑based framework to ensure a clear, defensible, and scientifically supported evaluation.
Fee Schedule:
Case Work: $200/hour (3-hour minimum)
Testimony: $300/hour (4-hour minimum)
Low-Impact Desk Reviews: Charged as a 3-hour minimum
Cases estimated to take over 5 hours of analysis MAY require a retainer of $1,000 minimum, non-refundable, which will be credited to final invoice
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