Registered attendees will be able to request an attendance certificate during the show.
Curved tire marks are often found at crash scenes. The Critical Speed Yaw analysis is both a loved and hated technique because it is so easy to apply and has a long history showing reliability when used correctly (LOVE IT!), but it is also really easy to misapply (HATE IT!). Topics will include: the theory behind the math, including the assumptions that are baked into it; some of the references; testing over the years; Suggestions for making the measurements; Documentation; Some examples.
BIBLIOGRAPHY:
The ambitious viewer might want to look over a few of the citations we'll likely mention, including:
SAE 890635, Reveley
SAE 940723, Lambourn
ARJ Jan/Feb 95, Vol.7(1), Shelton
SAE 970957, Brach
SAE 970955, Bellion
SAE 2004-01-1187, MacInnis
Grass and Gravel Yaw Tests, Bartlett & Wright; 1st ITAI–EVU Conf, Hinckley UK, ‘09
CSY Tests w/ ABS & ESC on Pavement, Gravel, and Grass, Bartlett & Wright; ARJ 18(3), May/June 2008
Daily, Shigemura, Daily, Fundamentals of Traffic Crash Reconstruction, chapter 13
Traffic Crash Reconstruction, NUCPS, Lynn Fricke, Chapter 11
Updated in 2021 to include ACTAR's new scenario-based problems!
The ACTAR prep class will help the trained reconstructionist pass the ACTAR exam.
Topics covered in this 2-day class include:
CELEBRATING 40 YEARS OF NAPARS 1984 - 2024
SYMPOSIUM ON EDR RESEARCH AND TRAINING
Dates: 08 April 2024 through 12 April 2024
Location: Oklahoma City, Oklahoma
Facility: Embassy Suites 1815 S. Meridian Oklahoma City, Ok.
Cost: $499.00/person
Don't miss the opportunity to receive EDR Training from some of the world's best known EDR specialists for FIVE days at the lowest rate available for this type training.
Format: The Symposium on EDR Research and Training will include updates and training regarding EDR's on cars, light trucks, motorcycles and heavy vehicles.
Car and Light Truck EDR speakers: Brad Muir of Crash Data Specialists Wes Vandiver of Berla Kent Boots of Kent E. Boots & Associates Nick Manz of Toyota Don Floyd of General Motors Tommy Beetham of General Motors Andy Rich of Rich Consulting LLC Richard Ruth of Ruth Consulting Bill Rose of Bosch Greg Russell of Crash Data Specialists
Car and Light Truck EDR speakers:
Motorcycle EDR speakers: Ed Fatzinger of Momentum Engineering Andre Doria of Compass Kinetics Heavy Vehicle EDR speakers: Dave Plant of D.P. Plant & Associates (Testing and Support) Greg Wilcoxson of Wilcoxson Consulting LLC Matthew DiSogra of Delta V Brad Higgins of Mecanica Scientific Services Corp. Wes Grimes of Mecanica Scientific Services Corp (Testing and Support) Steve Anderson of The Forensic Training Group James Loftis of The Forensic Training Group
Motorcycle EDR speakers:
Heavy Vehicle EDR speakers:
Schedule:
The cost of the Symposium includes lunch each day and breaks.
Limited seating is available so reserve your seat today.
Our primary hotel is probably booked: Embassy Suites 1815 S. Meridian in Oklahoma City, OK. is full at this time.
https://www.hilton.com/en/book/reservation/deeplink/?ctyhocn=OKCATHX&groupCode=CHHNAP&arrivaldate=2024-04-07&departuredate=2024-04-12&cid=OM,WW,HILTONLINK,EN,DirectLink&fromId=HILTONLINKDIRECT
Our overflow hotel is the Hampton Inns and Suites, located across the street from the Embassy Suites at 4333 SW 15th Street Oklahoma City, Oklahoma 73108. The hotel offers free shuttle service from Will Rogers World Airport from 6:00 am to 10:00 pm each day. Rates are set at $104.00/night for a king single and $114.00/night for a queen double. Please click on the link below to reserve your room.
Napars
NAPARS members get a 50-Euro discount, so the class is just 100€.
Presented April 8, 15, 22, and 29th.
To register just visit:
ATVs may follow the same physical laws as cars, but their unique configurations and environments mean their crash scenes deserve special attention. This presentation will discuss test data useful to the crash analyst in determining speed, including
Heavy Braking Rolling Friction Rollovers Analysis Airborne Analysis 2 Vehicle Collisions ATV Gate Collision
OUR SPEAKER: Mark Wright retired from Ontario Provincial Police Retired OPP after 38 years in law enforcement. He served as the OPP Provincial Collision Reconstruction Coordinator for 21 years. He holds ACTAR 1312 (since 2002), and has served 19 years on the ACTAR BoD. He has been involved in ATV collision research for more than 20 years.
Almost every AR investigation and reconstruction requires us to make photographs for documentation, analysis (including photogrammetry), demonstration, and to use as exhibits in reports, depositions, and trials. Three tools—tripods, polarizers, and flash—help ensure you create consistent, accurate, good quality, and useful photographs.
-1- Tripods: Features to look for.
How tall should they be?
Uses: steady camera
level camera
low light or long exposures
when you need to be in the photo
before and after photos
multiple photos from same position
focus stacking.
Choosing a tripod head.
-2- Polarizers: Reduce glare and enrich saturation.
Only filter whose effects you can’t replicate in Photoshop.
Useful for almost all site and vehicle inspections.
Especially critical for documenting tire marks.
Can bring out details on vehicles you can’t see with the naked eye.
-3- Flash: Using ambient, full flash, or fill flash.
Add light where it’s needed.
Show textures.
Reduce excessive contrast.
Freeze motion.
Multiple flashes bring out details in shadows.
OUR SPEAKER: For more than 40 years, Tom has been providing litigation-oriented consulting engineering services in tire failures and applications, forensic photography, and vehicle accident reconstruction. He runs https://vadnaisengineering.com/ operating out of the Atlanta area, but he travels nationwide for his clients.
NAPARS, PO Box 866Farmington NH 03835603.923-8077admin@napars.org