J2 Engineering provides services in all areas of vehicle accident investigation and reconstruction. Reconstructions involve trains, passenger vehicles, commercial vehicles, motorcycles, bicycles and pedestrians. The services provided include determining vehicle speed, vehicle changes in velocity and accident avoidability. We examine the given accident scenario and compare it against the available physical evidence to determine the accuracy of any statements. We also evaluate low speed impacts with respect to impact severity, the forces sustained by vehicles and occupants and the relationships between the forces and injury potential. We inspect vehicles for the analysis of mechanical and/or electrical component failures and their potential to cause or contribute to accidents.
J2 Engineering owns, and is certified to operate, the equipment necessary to download data from the airbag modules (Black Box) of passenger vehicles. We work with manufacturer’s representatives to access the equipment and software necessary to allow our download and analysis of data from the engine control modules of commercial vehicles. The data from the airbag modules and engine control modules are used in conjunction with standard methods of analysis to provide information on vehicle speeds and the acceleration and braking rates.
At J2 Engineering we use several simulation programs including HVE, PC-Crash and M-SMAC. The simulation programs are physics based analysis tools which can also be used in the courtroom to demonstrate the mechanics of an accident. Data from a simulation can be combined with photographs, video of the accident scene and the involved vehicles to create an animation which can be used to highlight individual aspects of the collision process.