Illinois Association of Technical Accident Investigators

10/08/2026

🚙 Bob Stewart from the Automotive Anti-Counterfeiting Council is here this afternoon to give a presentation on the effects of and how to detect if a counterfeit airbag may have been involved in your collision. 💥

10/08/2026

This is a big anniversary of the IATAI Conference. The board members reached out to past presidents and asked them to deliver a message to our current membership.

Dan DeRezny is a retired ISP Sergeant and served as the IATAI President in 2008 and 2009.

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

10/08/2026

Did you miss crash testing yesterday? Don’t miss next years conference in Champaign, October 6-8, 2027

10/04/2026

It's exam day! 📚 All the best to the candidates taking the Accreditation Commission for Traffic Accident Reconstruction exam today in Evanston! This 8-hour examination is the final step in becoming accredited.

ACTAR accreditation promotes the professional and intellectual development of those involved in collision reconstruction. 🚗

10/03/2026

Camilo Oceguera, a practicing attorney at D&O Law Group, LLC, will be participating in our mock trial session on Thursday. You can still sign up to join us next week by going to https://iatai.org/event-6659260

Attorney Camilo Oceguera was born and raised in Chicago. He attended the Latin School of Chicago for high school and graduated from Colgate University in New York. After college Camilo returned to the City he calls home where he worked as a project assistant at Kirkland and Ellis, LLP, where he was exposed to complex Civil Litigation in State, Federal, and International Courts. In 2009, he obtained his Juris Doctor from DePaul University’s College of Law with a Certificate in Public Interest.

Camilo Oceguera is a principal attorney and founding partner of D&O Law Group. Prior to establishing D&O Law Group, Camilo worked as an Assistant State’s Attorney in the Cook County State’s Attorney’s Office. As an Assistant State’s Attorney, Camilo handled family law matters ranging from establishing paternity to post-decree issues. Subsequently, Camilo prosecuted all types of felony and misdemeanor criminal matters from violent offenses such as murder to financial and property crimes. Camilo spent an extensive amount of time prosecuting traffic offenses, becoming an expert in DUIs and Statutory Summary Suspension Hearings. In particular, Camilo handled the Illinois State Trooper call in the Sixth District for over a year. Camilo tried more than fifteen jury trials, helping him develop a strong sense of comfort in the courtroom as a litigator. As a defense attorney, Camilo has tried Murders, Reckless Homicides, Aggravated DUI death cases as well as other Class X felonies.

Throughout his educational and professional experiences, Camilo has consistently demonstrated a commitment to helping others in his community. Camilo volunteered in Harlingen, Texas, where he assisted detainees with immigration issues. Camilo also spent a summer in the southern-most state of Mexico, Chiapas, working with victims of crime on a municipal level as well as preparing petitions for Human Rights Violations before the International Human Rights Court in Costa Rica. Camilo also served of the President of the Southwest Bar Association of Cook County and is currently the President of the Latino Bar Association of Will County.

10/01/2026

Daniel Billington will be giving a presentation on the visibility of pedestrians at night on Thursday.

Daniel Billington started his career in 1994, as a Sheriff’s Deputy for the Waukesha County Sheriff’s Department in Wisconsin. He has been the Senior Collision Reconstructionist and Forensic Visibility Analyst with Great Lakes Forensic Experts and an ACTAR-accredited collision reconstructionist since 2009. Dan has invested more than 28 years in the investigation of complex and disputed motor vehicle collisions, and for that past 18 years has provided independent services in the private sector for attorneys, governmental agencies, insurers, corporations, and individuals in civil and criminal litigation.

Mr. Billington’s work focuses on collision reconstruction, forensic visibility and nighttime crashes, as well as human factors, EDR analysis, pedestrian and motorcycle collisions, video analysis, other forensic services. He is frequently retained in cases where the circumstances of a collision, driver actions, vehicle speed, occupant position, visibility, or the reliability of another expert’s analysis are contested. His work has played an important role in favorable litigation outcomes in cases where previously accepted conclusions were substantially reconsidered after additional forensic analysis.

He has testified extensively throughout the United States, and abroad, testifying at all levels of court, including the U.S. Department of Defense for trials involving collision reconstruction in Germany and South Korea.

Mr. Billington regularly presents to attorneys, law enforcement officers, engineers, and other professionals throughout the country on collision reconstruction, visibility, expert testimony, and the effective use—and misuse—of forensic evidence in litigation.

He attended his first IATAI conference for the 20th Anniversary in 2006 and served as IATAI’s Secretary from 2008 through 2012. Dan was also an appointed member of the ACTAR Governing Body of Directors where he served as the Chairperson for the Theory Test Development Committee.

09/30/2026

IATAI Past-President , current Training Coordinator, and Illinois State Police Major David Keltner will be speaking Wednesday.

He is a 26-year veteran of the Illinois State Police (ISP) and currently serves as the Division of Patrol Operations, Chicago Region Commander. In this role, he oversees ISP patrol operations throughout the nine counties of northeastern Illinois, one of the most populated and operationally complex regions of the state. He provides leadership and oversight for approximately 425 sworn officers and 25 code personnel responsible for delivering public safety services across the greater Chicago metropolitan area.

Throughout his career, Major Keltner has held numerous command and operational leadership assignments. He previously served as District Chicago Commander and as Commander of former District 5 (Joliet). He also served as the Operations Officer for District 5 and former District 17 (LaSalle). These assignments provided extensive experience in personnel management, patrol operations, traffic safety, emergency response, and the coordination of law enforcement resources across multiple jurisdictions.

Major Keltner has significant expertise in traffic crash investigation and reconstruction. He is an Accreditation Commission for Traffic Accident Reconstruction (ACTAR) certified reconstructionist (No. 2296) and an Illinois Law Enforcement Training and Standards Board (ILETSB) certified Reconstruction Specialist. He helped develop the Illinois State Police Statewide Traffic Crash Reconstruction Unit (TCRU) and is certified to instruct courses ranging from basic crash investigation through advanced traffic crash reconstruction.

During his career, Major Keltner has also been extensively involved in ISP's Control and Arrest Tactics, Emergency Medical Response, and Traffic Incident Management (TIM) programs. His operational experience includes serving as a crowd control team leader and as a certified police motorcycle officer.

Major Keltner has held leadership responsibilities during numerous large-scale and high-profile events, including the NATO Summit, G8 Summit, President Barack Obama's election detail, NASCAR, regional civil unrest operations, and the Democratic National Convention (DNC). During the DNC, he led the dignitary es**rt team, coordinating personnel and resources in support of a complex, multi-agency security operation.

Major Keltner is a graduate of the FBI National Academy, Session 295; Northwestern University Center for Public Safety School of Police Staff and Command, Class 514; Executive Management Program, Class 56; and the FBI National Academy Associates Leadership Certification Program. His career reflects extensive experience in executive leadership, patrol operations, traffic safety, major-event management, specialized training, and interagency coordination.

09/30/2026

On Wednesday next week, Ken Harmon from IPTM will be presenting a case study of a collision involving a pedestrian and a Ford Mustang. You can still join us. Check out https://iatai.org/event-6659260 for sign up information.

Ken began his career with the Tempe Police Department in 1979. He has completed assignments as a Patrol Officer, Field Training Officer, Solo Motor Officer, Traffic Collision Reconstructionist, Hit and Run Detective, SWAT, Hostage Negotiator, Crime Prevention, and Plain Clothes Surveillance Officer. He was promoted to Police Sergeant in 1996. From 2000 to 2006, he supervised the Vehicular Crimes Unit and the Hit and Run Detectives. Ken retired from the Tempe Police Department, Tempe, Arizona in 2009.

From 1987 to 1996, Ken was assigned to the Tempe Police Traffic Bureau. While there, he specialized in Traffic Collision Reconstruction and the prosecution of impaired drivers involved in fatal collisions. He has testified as an expert in the field of Traffic Collision Reconstruction as well as Human Factors for Drivers in both criminal and civil courts.

Mr. Harmon has completed training in traffic collision reconstruction from the Institute of Police Technology and Management, Northwestern Traffic Institute, University of California at Riverside, and Texas A&M. He completed his Bachelor of Arts degree in Human Resource Management from Ottawa University in August 2005.

Ken has been serving as a member of the adjunct faculty of the Institute of Police Technology and Management since 1993. He has instructed courses in Traffic Collision Investigation and Collision Reconstruction.

Between 2008 and 2023, Ken coordinated IPTM’s level 1 and level 2 Pedestrian/Bike Collision Investigation Courses. In 2023, Ken became the IPTM Traffic Crash Coordinator. Ken is a published author in the Pedestrian/Bicycle Crash Investigation/Reconstruction field.

09/28/2026

Next week Greg Russell will be instructing a two day Momentum with Excel class. 🖥

Greg is an accredited collision investigation and reconstruction expert with over 35 years of experience in both law enforcement and private work. He has a Bachelor's in Criminal Justice and a Master's in Legal and Ethical Studies from the University of Baltimore. Greg has conducted over 500 crash tests, presented at numerous conferences, and is on the board for Napars and Accreditation Commission for Traffic Accident Reconstruction.

We are excited to welcome him to Illinois next week! You can still join us for this by going to https://iatai.org/event-6711903

09/28/2026

🚗 Hey IATAI friends! We are one week out from our class and conference. This week we will be featuring the outstanding speakers who will be presenting next week. It is not too late to sign up to join us!

Check out
https://iatai.org/event-6711903 for the class and
https://iatai.org/event-6659260 for the conference