Nathan Rose is a Partner, Director, and Principal Accident Reconstructionist at Kineticorp, LLC, a Denver-based accident reconstruction, forensic engineering, and forensic visualization firm that he helped found in 2005. Prior to that, he held positions as an engineer (1998 to 2003) and a senior engineer (2003 to 2005) at Knott Laboratory, another Denver-based forensic engineering firm. 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. During his graduate studies, he specialized in dynamics and impact mechanics and he has published numerous technical articles and reports related to vehicular accident reconstruction. These articles have covered many topics, including rollover accident reconstruction, motorcycle accident reconstruction, crash simulation, video analysis, crush analysis, restitution, and crash test sensor analysis. Nathan is a past organizer for the Rollover, Rear Impact, and Accident Reconstruction Sessions held annually at the Society of Automotive Engineers (SAE) World Congress. He used to teach a one-day course for SAE on rollover accident reconstruction and he currently teaches a three-day accident reconstruction course for SAE. Nathan holds a motorcycle endorsement in the State of Colorado.

VIDEOS and podcasts






Vehicle Crash Reconstruction: Principles and Technology

Course Description: This is a 3-day comprehensive course giving a broad overview of accident reconstruction. The course covers the underlying physical principles used by reconstructionists, the types of physical evidence from various crash types, and empirical data that accident reconstructionists can draw on for analyzing crashes. Topics covered include: motorcycle, rollover, pedestrian, and heavy truck accident reconstruction, crush analysis, event data recorders, video analysis, and photogrammetry.


August 6-8, 2018 - Herndon, Virginia - Register

November 5-7, 2018 - Phoenix, Arizona - Register


One of Nathan's research focuses is and has been motorcycle accident reconstruction. This will be the topic of his second book, due out late in 2018. Some accident reconstructionists portray motorcycle accident reconstruction as a particularly esoteric topic, the purview of former elite motorcycle racers and guys that hang out at biker bars. The truth, though, is that while there are certainly unique aspects to the way motorcycles handle, a well-founded reconstruction of a motorcycle accident 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. Of course, motorcycle accidents also have their unique features and characteristics. 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, let's not forget that motorcycles usually have only two wheels and they will usually capsize during the crash. Nathan's research has developed and documented methods for analyzing each of these occurrences.

If you would like to explore some of the results of Nathan's research related to motorcycle accidents, check out his blog, sign-up for updates, and keep your eyes out for his forthcoming book. Links to a few sample articles are included below:

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

Related Case Study Videos



Nathan has spent many years developing, publishing, and documenting physics-based methods for analyzing rollover accidents and his forthcoming book details these methods. Rollover crashes can be divided into categories based on their attributes. Some rollovers involve a single vehicle; others occur following a vehicle-to-vehicle impact, and thus, involve different forces and mechanisms than single vehicle rollovers. Some rollovers occur on a paved roadway and others occur off the roadway on dirt, gravel, and vegetation. Some rollovers terminate when all of the vehicle energy is dissipated through vehicle-to-ground impacts; others terminate when the vehicle strikes a fixed object. Some rollovers are initiated through a combination of severe steering inputs and suspension effects; others are initiated when the vehicle strikes a curb or furrows in soil; some rollovers are caused by or preceded by impacts. A well-founded reconstruction of each of these types of rollovers will be based on physical evidence and principles of physics. In the following articles, you can read some of the results of Nathan's research and writing related to these type of events:

Scene and Vehicle Documentation Checklists for Rollover Accidents

Simulating Rollover Crashes in PC-Crash

Contact Nathan 



Office - (303)733-1888

Mobile - (720)839-1995



Denver, CO

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

Los Angeles, CA

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