Nathan’s first book is titled Rollover Accident Reconstruction. You can purchase it here.


Nathan has spent many years developing, publishing, and documenting physics-based methods for analyzing rollover accidents and his 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