National Association of Professional Accident Reconstruction Specialists

Members get access to the Reference Library of technical papers and crash related reference materials, and a NAPARS exclusive: all back-issues of Accident Reconstruction Journal and Accident Investigation Quarterly, and more! Click Join for more details!   


 Accident Reconstruction Journal update, 17 June 2020:  Issue 30(3), #177 has arrived at my mailbox!

 NAPARS News update, 03 June 2020: The second newsletter this year is in the works.

Upcoming events

    • 05 Oct 2020
    • 08:00 (EDT)
    • 06 Oct 2020
    • 17:00 (EDT)
    • Grand Hotel, Ocean City MD

    Tire Forensics Class with T. J. Tennant

    2-days of tire information from one of the country's prominent tire experts!

    T.J. retired from Bridgestone Tire, and brings a lifetime of valuable knowledge and information to assist accident reconstructionists.

    Expected topics include:

    • Why Tires Are Important
    • Tire Performance Requirements
    • Tire Construction Basics
    • Vehicle Door Placard
    • UTQG (Uniform Tire Quality Grading)
    • Load Index
    • Tire Deflection
    • Proper Tire Maintenance
    • Tire Repairs
    • Air Pressure Effects on Tires
    • Tire Application Guidelines
    • P-Metric vs Euro-Metric vs Light Truck
    • Truck/Bus Radial (TBR) Basics
    • Materials
    • Components
    • Repairs
    • Tire/Rim Load Capacity Vs. GAWR
    • Failure Analysis (Hands on)

    Attendees are encouraged to bring notebooks.

    Attendees will be on their own for meals. There are loads of restaurants in and around the hotel. It is Ocean City, after all!

    T.J.'s book, available from IPTM, is suggested reading, but not required, and is not supplied with the class.

    Passenger and Light Truck Tire Conditions Manual This clear, easy-to-read manual will assist everyone who wishes to expand their knowledge of the potential causes of different tire conditions. This is the book used by engineers in virtually every tire manufacturing company. Click Here to visit IPTM's store.

    In class, T.J. also refers to The Tire and Rim Association Annual Yearbook The YEAR BOOK contains all TRA Standards and approved related information for tires, rims, and allied parts for ground vehicles. These Standards include tire designations; tire load ratings and dimensions; approved rim contour(s) and valve(s) for each tire size; rim contour dimensions; valve dimensions; and other data and notes necessary for tire/rim/valve interchangeability. This book is available for $125.00 (including shipping in the USA, and handling).

    • 06 Oct 2020
    • (EDT)
    • Worldwide
    NAPARS will be hosting an ACTAR exam on 10/6/20 in conjunction with the Joint Conference. Register for this or any other ACTAR test at the ACTAR website Be sure to register well in advance - it is a certification process, so it takes some time.

    • 07 Oct 2020
    • 08:00 (EDT)
    • 09 Oct 2020
    • 16:00 (EDT)
    • Ocean City MD

    2020 Joint Conference, hosted by NAPARS

    DATES: Oct 7,8,9 (Wed. to Fri.) 

    COST:   $299 for members of the 5 supporting groups, ITAI or EVU, $399 for others.

    LOCATION: Grand Hotel in Ocean City MD. 

               $69 - No view, but a fine room.

               $79 - Partial View

               $89 - Full Ocean View

    Call the Grand Hotel directly and mention the NAPARS Joint Conference

    to secure reduced conference room rates: 1-800-447-6779 

    $69 (no view), $79 (partial view), and $89 (ocean view)

    More information:

    Live crash tests will be conducted by Brad Muir and his team on Wednesday afternoon at the airport.

    Scheduled Speakers include: Brad Muir (CDR Update), Wes Grimes (CMV Acceleration Rates forward & reverse), Matt DiSiroga (CMV EDR), John Daily (Topic TBD)

    Airport shuttle will be running to Salisbury Airport on Tuesday afternoon and Friday after the conference, so no rental car is required!

    Meals Included:

    Breakfast & Lunch on Wednesday and Friday, and all 3 meals on Thursday.

    Wednesday night attendees will be on their own.

    Thursday night will be a business casual get together with a cash bar.


    TIRE FORENSICS, 2-day class by T.J.Tennant, October 5 and 6, $250 per person - see that page for separate registration.

    ACTAR Prep class, Oct 5. Cost and details TBA when firmed up

    ACTAR Test, Oct 6. You have to register with ACTAR - not with us!

    There will be ACTAR CEUs available - we don't know how many yet.

    More news as it becomes available.

    • 07 Oct 2020
    • 08:01 (EDT)
    • 09 Oct 2020
    • (EDT)
    • Ocean City, MD


    Ocean City, Maryland

    October 7-9

    The National Association of Professional Accident Reconstruction Specialists (NAPARS) is teaming up with professional associations from the east coast to host the 2020 Joint Crash Conference in Ocean City, Maryland in October. The conference will be attended by 150 to 200 law enforcement and private consulting professionals. It will include expert professional breakout sessions, live crash testing and excellent networking opportunities.

    NAPARS is currently soliciting professional vendor sponsors for the conference. Sponsorship will include:

    •  A centralized and high traffic vendor table with chairs and power in the main banquet dining hall
    • A 5-Minute presentation to the attendees showcasing your products
    • Product information provided to all attendees
    • Attendee contact list provided to all vendors
    • Conference attendance and meals for one attendee. (Does not include dinner on 10/07/2019)

    All for only $399! (Plus $299 per person for additional personnel)

    In addition, professional vendors also have opportunities to increase their sponsorship and exposure to attendees by adding on a bonus sponsorship with items such as logo inclusion on conference merchandise or hosting a social activity, snack break or meal.

    For further information on sponsorship, please contact Adam Hyde from NAPARS at:

     Email:

     Cell: 847-815-6746

NAPARS membership includes a complimentary subscription to the digital edition of the Accident Reconstruction Journal, which comes out 6 times each year. ARJ provides timely, reliable, and fresh research, thought-provoking reconstruction related studies and meaningful crash test data from multiple sources.
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