Forensic consulting and expert witness testimony in accident reconstruction, biomechanics, human factors, and traffic engineering.
Since 1967, Boster, Kobayashi & Associates has reconstructed more than 30,000 accidents and testified in over 1,300 trials. Our engineers and scientists help attorneys, insurers, and risk managers understand what happened, and explain it clearly enough to hold up in court.
Select a discipline below to view technical capabilities, case examples, and expert witnesses.
Evaluating the design, construction, and maintenance standards behind roadway incidents.
Traffic Engineering & Highway Design
The technology behind evidence a jury can actually see.
Specialized Equipment & Services
Slip, trip, fall, and safety incidents across construction sites, pools, and workplaces.
Premises Liability & Safety
Determining whether the forces at play could actually cause the injury being claimed.
Biomechanics
Reconstructing how a collision happened, one piece of evidence at a time.
Accident ReconstructionPrecise forensic insights for litigation and risk
A team, not a single expert
FARO 3D laser scanning, drone photogrammetry, Bosch CDR and HVEDR downloads, PC-Crash and HVE simulation.
Transparent fees with a public rate schedule. Findings built to withstand cross-examination, not just sound right in a report.
Answers to common questions
Yes, though we're confirming with each public agency client whether they're comfortable being named here before we list them specifically.
Call us at 925.447.6495, or reach our 24-hour line at 925.963.9653 for time-sensitive matters. You can also use the contact form to send case details directly.
We're based in Livermore, California, and handle the majority of our cases statewide, with experience extending across the western United States when a case calls for it.
Every engagement starts with a conflict check, so you know from the outset there's no issue taking the case.
Our hourly rates are public. See our Fee Schedule for current rates by associate, along with our retainer and billing terms.
No. In more than 45 years and 1,300-plus trials, no BK&A expert has ever been disqualified based on their qualifications.
Yes. Our job is determining what actually happened, not advocating for a predetermined outcome.
Accident reconstruction, biomechanics, human factors, product liability, premises liability and safety, and traffic engineering. Most cases touch more than one of these, which is why our team works across all of them under one roof.
We offer 24-hour emergency response for scene evaluation, vehicle inspection, and evidence preservation, before physical evidence changes or disappears.
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