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Nathan Rose is a Partner, Director, and Principal Accident Reconstructionist at Kineticorp, LLC, an accident reconstruction, forensic engineering, and forensic visualization firm with offices in Los Angeles and Denver. Nathan helped found Kineticorp in 2005. Prior to that, from 1998 to 2005, he was an accident reconstructionists and engineer at a forensic engineering firm in the Denver area. He holds a bachelor’s degree in Engineering with a Civil specialty from the Colorado School of Mines (1998) and a master’s degree in Mechanical Engineering from the University of Colorado at Denver (2003). Nathan is accredited as a Traffic Accident Reconstructionist by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR) and he has offered expert testimony as a reconstructionist in courts around the United States. Nathan holds a motorcycle endorsement in the State of Colorado and he has completed the Motorcycle Safety Foundation’s Basic and Advanced RiderCourses.

Nathan’s research and writing help lay the foundation for his expert testimony. He has published numerous technical articles and reports related to accident reconstruction (topics have included: rollover crashes, motorcycle crashes, physics-based crash simulation, video analysis, and crush analysis. Nathan has also published two books: Motorcycle Accident Reconstruction and Rollover Accident Reconstruction. In addition, he teaches a three-day accident reconstruction course for the Society of Automotive Engineers (SAE).

If you want to know more about Nathan’s approach to being an expert witness, you can start with these blog posts:

The Honest Expert Witness - A Manifesto

My Two Cents on Writing Accident Reconstruction Reports in a Legal Setting

If you are interested in retaining Nathan on a case or scheduling a course, you can reach out to him at (720)839-1995 or You can download Nathan’s CV here.



Nathan’s second book is called motorcycle accident reconstruction. You can purchase it here.

A well-founded reconstruction of a motorcycle crash will take into account the unique ways that motorcycles handle and move and the relationship of the rider to the motorcycle. For example, the rider is not attached to and contained by the motorcycle in the same way passenger car drivers are. Oftentimes, the rider will separate from the motorcycle and will physically strike another car or the ground. Also, the rider can weigh as much as the motorcycle does, and therefore, exert significant influence over the motion of the motorcycle. And, of course, motorcycles usually have only two wheels and they will usually capsize during the crash.

These unique features acknowledged, though, a well-founded reconstruction of a motorcycle crash is much like any other accident reconstruction - it is based on physical evidence and on fundamental principles of physics. Conservation of energy, conservation of momentum, Newton's laws of motion, empirical data and physical testing - these are at the core of motorcycle accident reconstruction, just as they are at the core of rollover accident reconstruction, heavy truck accident reconstruction, pedestrian accident reconstruction, roadside barrier impact reconstruction. Nathan’s research and writing have left him with significant expertise in how and why motorcycle crashes occur.

If you are interested in retaining Nathan on a case or scheduling a three-day motorcycle accident reconstruction course for your organization, you can reach out to him at (720)839-1995 or at

Here are links to a few of Nathan’s blog post related to motorcycle accident reconstruction:

Lane Splitting in California

Motorcycle Accident Reconstruction: Incorporating Struck Vehicle EDR Data

Why Do Drivers Pull Out In Front of Motorcyclists?

Determining Motorcycle Speed from Struck Vehicle Translation and Rotation

Equations for Estimating the Center of Gravity Height of a Motorcycle

Sliding and Tumbling Deceleration of Motorcycles

Braking Capabilities of Motorcyclists

Braking and Swerving Capabilities of Three-Wheeled Motorcycles

Here is a link to Nathan’s presentation at the 2019 EDR Summit: Motorcycle Accident Reconstruction: Incorporating the Struck Vehicle EDR Data

Case Study Videos

VIDEOS and podcasts




Contact Nathan 



Mobile - (720)839-1995

Office - (303)733-1888



Denver, CO

6070 Greenwood Plaza Blvd., Suite 200
Greenwood Village, CO 80111

Los Angeles, CA

1500 Rosecrans Ave., Suite 500
Manhattan Beach, CA 90266