Welcome to . . . . .

4N6XPRT Systems®
Providing the vehicle information you need
- Quickly - Conveinently -
- Cost Effectively -
8387 University Avenue  -  La Mesa, CA (U.S.A)  -  91942-9342
FAX : 1-619-464-2206   Voice Phone: 1-619-464-3478
e-mail: 4n6@4n6xprt.com

4N6XPRT Systems  publishes and sells software for use in Accident Investigation, Accident Reconstruction, and Litigation communities.
The software also has uses in city planning, traffic engineering, architectural design, vehicle sales, and safety.

Our goal is to provide software that is Easy To Use that provides at least as much, if not more than, what is suggested or promised in our marketing materials and pricing.

Download Program Order Form as a PDF document

Our current Software Programs:


Program Page

Program Notes


32 or 64 bit OS compatible (Windows 7-8-10)


Expert AutoStats logo


AutoStats ®

2017 Update began shipping April  2017

Expert Autostats provides the  dimensional  and performance data important to a vehicle accident investigator and reconstructionist in an EASY to use, yet very complete, program. The database includes information on over 46,000 model year passenger cars, vans, utility vehicles, and pick-up trucks intended for sale in the United States. Sample Printouts from various conferences can be accessed from the Conference Crash Test Summaries Page.


Go to - Screen Shots - to see the new look and feel

4N6XPRT StifCalcs logo


StifCalcs ®

2017 Update began shipping August 2017

4N6XPRT StifCalcs provides Quick, Convenient, Easy   access to the NHTSA Crash Test data on your own MS-Windows computer without the need for an internet connection. Sample Printouts from various conferences can be accessed from the Conference Crash Test Summaries Page.

NOW with Force Balance Calculation Module!!

Expert VIN DeCoder Logo


VIN DeCoder ®

2016 Update began shipping January 2017

Expert VIN DeCoder is User Friendly Software used to provide interpretation of the 17 character VIN Number on Cars, Light Pickups, Utility Vehicles, and Vans. Sample Printouts from various conferences can be accessed from the Conference Crash Test Summaries Page.

4N6XPRT BioMeknx Icon Image


BioMeknx ®

Released 12/28/2007

4N6XPRT   BioMeknx collects the Biomechanical data of importance to the Accident Investigator into one easily accessible reference location


16 or 32 bit OS compatible ONLY


Expert Qwic Calcs logo


QwicCalcs ®

Expert Qwic Calcs provides Fast, non-mathematical   answers to questions of importance in crash evaluations.

non-mathematical= no math background necessary to use the program
and obtain "correct" results

Expert TireStuf logo


TireStuf ®

Expert TireStuf is useful for evaluating many aspects of Passenger Car and Light Truck tire information.

4N6XPRT Ped and Bike Calcs logo


Ped & Bike Calcs ®

4N6XPRT Ped & Bike Calcs is useful for evaluating vehicle speeds in Vehicle vs. Pedestrian/Bicyclist accidents.


Other Services Offered:

Individual Vehicle Data Search Service ® ...... or ...... IVDSS ®

This is, as the name implies, a service where you can order data on individual vehicles. You may order Dimensional Data, VIN information, (and NHTSA Crash data when available) on individual vehicles, including : Autos, Vans, Motorcycles, Semi tractors/Trailers, Trucks and some Construction Equipment

Force Balance Analysis Service added to our IVDSS Vehicle Information Service

A  Force Balance module is now included  in 4N6XPRT StifCalcs® beginning with the 2011 version of the program  -   As an extension of our Individual Vehicle Data Search Service, we have now added Force Balance Analysis runs to the services we offer.   An order form with pricing fcan be downloaded from this link.

Articles, Papers, Publications,  and Manuals

Summaries of Past Conferences with Selected Conference photographs, video, and sample printouts for the Crash Test vehicles from our software

Sample printouts for the Conference Crash Test vehicles from our software

Upcoming conferences

Interesting tidbits

Links to other sites and Resources


® - Denotes a Trademark registered with the USP& TO. All of the program materials are copyrighted under U.S. and International Law.

The programs are licensed to a single registered user . They may be installed on Three (3) single station/single user computers concurrently. Installation on a network computer for corporate/entity wide use at multiple locations is a violation of the licensing. An example of the three installations for a private consultant would be  -

1 at the office/workplace

1 at the home of the registered user

1 on a portable/laptop to be used in the field or in court {by the registered user}

The Registered User may be the owner or an employee of that owner, so long as only one person can access the program at a time.



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