The health and safety of our employees, partners, and clients are of utmost importance to DJS Associates, Inc.

Amidst the COVID-19 pandemic, we have encouraged all employees to work remotely in order to prevent and limit the spread of illness.

DJS administrative staff, engineers and 24/7 rapid response field crew will continue to work remotely until further direction from the state.

As we continue to provide our clients with the efficient, dedicated service they have always been accustom to, please click here for more information on how to contact us.

PC Crash

PC-Crash™ is a Windows™ collision & trajectory simulation tool that enables the accurate analysis of a wide variety of motor vehicle collisions and other incidents.



Step-By-Step Example of How Our Engineers Utilize PC Crash


Step 1

DJS Associates’ site measurements aligned with aerial photographic coverage of the area of the occurrence.

PC Crash Step 1

Step 2

Same image as step 1, but zoomed in closer to the area of the occurrence.

PC Crash Step 2

Step 3

A tracing of police diagram, aligned with DJS Associates’ site measurements and aerial image.
Tracing includes tire marks left by a yawing vehicle.

PC Crash Step 3

Step 4

Image highlighting the tire marks left by the yawing vehicle.

PC Crash Step 4

Step 5

Independent plot of vehicle dynamics on tire marks and manual calculation of yaw speed is performed.

PC Crash Step 5

Step 6

PC-Crash computer simulation is setup and input parameters are iterated.

PC Crash Step 6

Step 7

Iteration is performed to match the simulated vehicle dynamics with the tire marks. Vehicle yaw speed is confirmed.

PC Crash Step 7

Step 8

Simulation is shown in plan view on aerial photograph.

PC Crash Step 8

Step 9

Simulation is shown in perspective view on aerial photograph.

PC Crash Step 9

Step 10

Simulation is shown in perspective view on basic site drawing.

PC Crash Step 10

Contact Us to See If Your Case Can Benefit from Using PC Crash

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