Vehicle Dimension Database & NHTSA Crash Test Results
8387 University Avenue
La Mesa, CA91942-9342
Phone: click for phone(800) 266-9778 or (619) 464-3478 | Fax: (619) 464-2206
About 4N6XPRT Systems
4N6XPRT Systems® is a dba of Expert Witness Services, Inc., a California corporation. Expert Witness Services, Inc. has been in business since 1974, and 4N6XPRT Systems® since 1990.
4N6XPRT Systems® has developed, published, and currently offers for sale the following programs: Expert AutoStats®, 4N6XPRT StifCalcs®, 4N6XPRT BioMeknx®, Expert Qwic Calcs®, Expert VIN DeCoder®, Expert TireStuf®, and 4N6XPRT Ped & Bike Calcs®.
The original programs were developed by Daniel W. Vomhof, Ph.D., and Daniel W. Vomhof III. The program developers are Court Qualified Accident Reconstructionists with over 65 years of combined reconstruction, A.C.T.A.R. Certified Accident Reconstructionists, and Board Certified Forensic Examiners.
The principal product for which 4N6XPRT Systems is known is the Expert AutoStats® program. Since its introduction in 1991, Expert AutoStats® has grown from a database of 12,000 vehicles to over 41,000 vehicles in the 2011 edition. Unlike printed sources, each update corrects reported omissions in the existing data as well as adding the new models. It is currently the only database program available for purchase having this depth of models, breadth of years, and detail of information. Expert AutoStats® is owned by over 300 Government agencies and 700 private consultants within the United States, Canada, and South America, as well as several major automotive manufacturers and insurance claims departments.
Customer service/support for registered owners of the current program version includes providing corrected data at no charge when an error in dimensions or an omitted vehicle is called to our attention. This correction is usually e-mailed to the reporting party within 24 hours.
Biomechanics is the application of physics to describe, evaluate, or model living tissue and biological materials. Originally it was the application of the part of physics known as Mechanics to living systems. This is the same portion of physics which is used as the basis for much of accident... Read More
As of the 2012 release, this program provides dimensional data on over 42,000 automobiles, vans, utility vehicles, and pick-up trucks intended for sale in the United States. A limited number of models intended for sale elsewhere are also included. While the original program is DOS based, a... Read More
The alternative to creating a CLASS vehicle is to compute the stiffness values for the vehicle based upon the stiffness values which are known for the other vehicle and the crush measurements which have been taken for both vehicles. This is known as a FORCE BALANCE calculation and is based upon... Read More