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Accident Investigation

Motor Vehicle Accident Investigation

Reconstruction & Expert Witness Services

Accident investigation and accident reconstruction are commonly heard terms, but what exactly are they. The following discussion will attempt to shed some light on these processes.

After a motor vehicle accident occurs, particularly one resulting in severe injuries or death, it will usually be investigated and sometimes be reconstructed. There are two primary types of people that perform these duties, the police and independent investigators.

The police will investigate an accident with the intention of determining if any criminal activity took place in the accident. The job of the independent investigator is to analyze the causes of the accident so that liability and/or financial responsibility can be determined.

An accident investigation consists of many aspects. However, the investigation usually starts with an inspection of the accident site. At the site, measurements are taken of evidence left by the vehicles such as point of impact, final resting positions, skid marks, scrub marks, and gouge marks.

Vehicle inspections are another typical part of the accident investigation. These inspections will usually include measuring the amount of damage and damage profile of the vehicles. This information will be useful if an accident reconstruction is performed. The mechanical components of the vehicles such as brakes, steering, tires, suspension, lights, etc. may also be inspected and tested to determine if the condition of these components was a causative factor in the accident. The investigation might also include looking at driver qualifications, auditing logbooks, or reviewing other motor carrier compliance-related materials. With the accident investigation complete, accident reconstruction can be performed.

Reconstruction is the process of using physics to determine the speeds of the vehicles, and/or their relative positions at different times during the accident sequence. Information such as the pre-and post-impact direction of travel, length of pre-impact skid marks, post-impact distances moved, friction values for the various surfaces the vehicles traveled over, point of impact, impact angles, and weights of the vehicles are all used as inputs into the equations used to reconstruct an accident.

Expert Witness at various accident litigation efforts regarding significant injuries up to fatal ones, involving commercially operated trucks and buses of various sizes in multiple operations for hire from over-the-road coaches to urban operations.  with expertise in accident investigation, rule and regulation review, and review of company policies while supporting investigators, and attorneys.

The above gives just a brief overview of the processes of accident investigation and accident reconstruction.

A.W.G.T.C. services

A.W.G.T.C. can provide these services for you:

Legal Services Expertise:

  • Commercial Vehicle Expert Witness.
  • Commercial Vehicle Accident Investigation.
  • Driver compliance / DOT regulations.
  • Vehicle safety regulations.
  • Vehicle maintenance practices and standards


  • Multiple cases involving commercial vehicle accidents and non-compliance with regulations.
  • Case review and research.
  • Written reports.
  • Assistance in case preparation.
  • Expert Witness at depositions, arbitration and court.

All Services are Available:

Local • National • International


Associates are chosen on a most qualified basis for each particular assignment. Individual qualifications (resumes) shall be supplied upon request once information about the task is known.

Accident Investigation

Expert Witness Services

Accident investigation and accident reconstruction are commonly heard terms, but what exactly are they. The following discussion will attempt to shed some light on these processes...

Human Maintenance

A.W.G.T.C. Driver Program

While these driver health risks can impact highway safety, many of the readily identifiable effects are more apparent on drivers’ quality of life and life expectancy. Motor vehicle safety is an important public health problem particularly involving commercial drivers. 

Safety Rating Assistance

Motor Carrier Safety Rating Assistance

A safety rating is determined by a compliance review, an on-site examination of motor carrier operations, such as drivers’ hours of service, maintenance, and inspection, and driver qualification…

Special Operations Utilization

Diesel-Electric Hybrid Buses and Zero-Emissions Battery Electric Buses

AW Griffith Transportation Consulting has advised various top-level executives and technical managers that are transitioning to All-Electric Bus operations or special operations utilizing Diesel-Electric Hybrid Buses and Zero-Emissions Battery Electric Buses.

Safe Sanitization

Bus, Motorcoach, School Buses and Company Facilities

More than 69.7% of K-12 students are attending traditional, in-person learning. As School Bus Fleet previously reported, in March, the remote learning model has continued to decline as revised social distancing guidelines are expected to accelerate school reopening.

CDL Pre-Licensing

Contact us for specific training information.