Nathan Rose

Nathan Rose is Director and Principal Accident Reconstructionist at Kineticorp, a firm that he co-founded in 2005. Mr. Rose has been reconstructing vehicular crashes since 1998. He holds degrees in both Civil and Mechanical Engineering and he is an accredited Traffic Accident Reconstructionist. During his graduate studies, Mr. Rose specialized in dynamics (the study of motion) and impact mechanics (the study of how objects respond to impacts). He has extensive experience analyzing and interpreting physical evidence related to vehicular crashes as well as modeling and analyzing crashes with physics-based computer simulation. In the summer of 2009, Mr. Rose received an appointment as a Lecturer in the College of Engineering and Applied Science at the University of Colorado at Denver and taught a course on impact analysis. He currently teaches the Society of Automotive Engineers’ (SAE) course on reconstructing rollover crashes.

Mr. Rose has published numerous technical articles and reports related to vehicular accident reconstruction. These articles have been published in the SAE International Journal of Passenger Cars – Mechanical Systems, in the SAE Technical Paper Series, in Accident Investigation Quarterly, in the Proceedings of the International Crashworthiness Conference, and in Collision – The International Compendium of Crash Research. Topics covered in these articles include the accuracy of witness distance estimates, rollover crash dynamics and simulation, vehicle damage analysis methods, impact restitution, tire mark characteristics, critical speed analysis, spinning vehicle deceleration rates, motorcycle crash causation, photogrammetry, and video analysis. Mr. Rose also acts as a peer reviewer for technical papers published by the SAE. In the last 8 years, he reviewed 45 technical papers written by his peers. These reviews have been for the Accident Reconstruction (2007-16), Safety Test Methodology (2009, 2011), Rollover (2008-14) and Rear Impact (2009) Sessions for the annual SAE World Congress. Mr. Rose is a member of the SAE Occupant Protection Committee and an organizer for the Accident Reconstruction Session at the annual SAE World Congress (Since 2013). He is a past organizer for the Rollover and Rear Impact Sessions, also held at the SAE World Congress (2008-09).

Mr. Rose’s education, experience, research, and professional volunteer activities have laid the groundwork for the admission of his accident reconstruction work and testimony in courts around the country.

Research

• “Analysis of Concussion Causing Events in Professional Football – A Pilot Study,” funded in part by the National Football League
• “Using Data from a DriveCam Event Recorder to Reconstruct a Vehicle-to-Vehicle Impact,” funded in part by DriveCam, 2012-13
• “Using Data from a DriveCam Video Event Recorder to Reconstruct a Hard Braking Event,” funded in part by DriveCam, 2011-12
• “A Method to Quantify Vehicle Dynamics and Deformation for Vehicle Rollover Tests Using Camera-Matching Video Analysis,” Ford Motor Company
• “Image Analysis of Rollover Crash Test Using Photogrammetry,” funded in part by Ford Motor Company, 2005-06

Publications
Society of Automotive Engineers (SAE)
Collision: The International Compendium for Crash Research
Accident Investigation Quarterly
Electric Energy

• “Video Analysis of Motorcycle and Rider Dynamics During High-Side Falls,” #2017-01-1413, SAE
• “How Accurate Are Witness Distance Estimates Given in Car Lengths?,” Collision, Volume 11, Issue 1, 2016.
• “The Accelerations Present during the Trip Phase of a Soil-Tripped Rollover Crash,” Collision, Volume 11, Issue 1, 2016.
• “Post-Impact Dynamics for Vehicles with a High Yaw Velocity,” #2016-01-1470, SAE.
• “Tire Mark Striations: Sensitivity and Uncertainty Analysis,“#2016-01-1468, SAE.
• “The Relationship Between Tire Mark Striations and Tire Forces,”#2016-01-1479, SAE.
• “Evaluation of the Accuracy of Image Based Scanning as a Basis for Photogrammetric Reconstruction of Physical Evidence,” #2016-01-1467, SAE.
• “Validation of Equations for Motorcycle and Rider Lean on a Curve,” #2015-01-1422, SAE.
• “Further Assessment of the Uncertainty of CRASH3 ΔV and Energy Loss Calculations,” #2014-01-0477, SAE.
• “Vehicle Acceleration Modeling in PC-Crash,” #2014-01-0464, SAE.
• “Using Data from a DriveCam Event Recorder to Reconstruct a Vehicle-to-Vehicle Impact,” #2013-01-0778, SAE.
• “Comparison of Calculated Speeds for a Yawing and Braking Vehicle to Full-Scale Vehicle Tests,” #2012-01-0620, SAE.
• “Development of a Variable Deceleration Rate Approach to Rollover Crash Reconstruction,” #2009-01-0093, SAE.
• “Analysis of a Dolly Rollover with PC-Crash,” #2009-01-0822, SAE.
• “Determining Steering and Braking Levels from Yaw Mark Striations,” #2009-01-0092, SAE.
• “The Influence of Vehicle-to-Ground Impact Conditions on Rollover Dynamics and Severity,” #2008-01-0194, SAE.
• “Analysis of Vehicle-to-Ground Impacts during a Rollover with an Impulse-Momentum Impact Model,” #2008-01-0178, SAE.
• “A Method to Quantify Vehicle Dynamics and Deformation for Vehicle Rollover Tests Using Camera-Matching Video Analysis,” #2008-01-0350, SAE.
• “Occupant Ejection Trajectories in Rollover Crashes: Full-Scale Testing and Real World Cases,” #2008-01-0166, SAE.
• “Factors Influencing Roof-to-Ground Impact Severity: Video Analysis and Analytical Modeling,” #2007-01-0726, SAE.
• “Quantifying the Uncertainty in the Coefficient of Restitution Obtained with Accelerometer Data from a Crash Test,” #2007-01-0730, SAE.
• “Restitution Modeling for Crush Analysis: Theory and Validation,” #2006-01-0908, SAE.
• “Image Analysis of Rollover Crash Test Using Photogrammetry,” #2006-01-0723, SAE.
• “Crush and Conservation of Energy Analysis: Toward a Consistent Methodology,” #2005-01-1200, SAE.
• “An Examination of the CRASH3 Effective Mass Concept,” #2004-01-1181, SAE.
• “A Video Tracking Photogrammetry Technique To Survey Roadways for Accident Reconstruction,” #2004-01-1221, SAE.
• “An Examination of the Effective Mass Concept for Eccentric Motor Vehicle Impacts in the CRASH3 Algorithm,” Master’s Thesis, CU – Denver, 2003.
• “Integrating Monte Carlo Simulation, Momentum-Based Impact Modeling, and Restitution Data to Analyze Crash Severity,” #2001-01-3347, SAE.
• “Determining Crash Data Using Camera-Matching Photogrammetric Technique,” #2001-01-3313, SAE.
• “Using Digital Photogrammetry to Determine Vehicle Crush and Equivalent Barrier Speed,” #1999-01-0439, SAE.
• “The Role of Vehicle Crash Data Recorders in a Motor Vehicle Safety Program,” Electric Energy, Summer 2015.
• “Reconstruction and Analysis of Rollover Crashes of Light Vehicles,” Course Notes, SAE Course C1502.
• “Analysis of Motorcycle and Rider Limits on a Curve,” Collision, Volume 9, Issue 1.
• “ Using Data from a DriveCam Video Event Recorder to Reconstruct a Hard Braking Event, Collision, Volume 7, Issue 1.
• “A Variable Deceleration Rate Approach to Rollover Crash Reconstruction,” Collision, Volume 5, Issue 1.
• “Optimum Chord Length for Critical Speed Analysis,” Accident Investigation Quarterly, Summer 2002.
• “Using Digital Photogrammetry to Determine Crash Severity,” Proceedings of the International Crashworthiness Conference, September 2000.