One of the most complex categories of crash is those involving commercial vehicles. These types of crashes usually generate significant and dramatic roadway physical evidence along with extensive collision damage to the vehicles. In the modern trucking environment, the investigation needs to include an analysis of on-board electronic devices that may provide critical pre and post-crash evidence to the investigation. An in-depth investigation should include:
- Engine control module download and analysis
- Brake condition and brake force calculations
- Driver logbook and fatigue factor analysis
- Complex tire mark analysis on the roadway
- Engine casualties or other mechanical condition th
at could have an effect on the crash
- Fire cause and origin
- Overloading and loss of stability issues
- Compliance with the Federal Motor Carrier Safety Regulations
- Driver strategy and tactics – including driver training issues
- GPS and satellite communication analysis
Commercial vehicles and crashes are complex and an abundance of modern technology must be considered, if available to assist the reconstructionist in the investigation. During our time as law enforcement officers, we have conducted extensive at-scene investigations and have specialized training in the application of traffic laws and safety regulations. The entire Introtech staff has been extensively trained in the proper interpretation of the unique physical evidence generated in a commercial vehicle crash. 
Our specialized training in commercial vehicle crash evidence, human factors and commercial vehicle components have been obtained from the most prominent schools in the field including; Northwestern University, Texas A M University, Bendix Spicer Foundation Brake LLC, National Transportation Safety Board Academy, The Ohio State Highway Patrol Academy, Cummins Diesel, Detroit Diesel and the Institute of Police Technology and Management.
We are one of the few private sector organizations that have the ability to properly download, analyze and apply the 
electronic data from on-board engine control modules from a wide variety of commercial diesel engines. In addition we have our own in-house diesel engine expert with expertise in General Motors/Detroit, Cummins and Caterpillar engines. When necessary we incorporate experts in commercial driving procedures and standards in order to expand upon the human factor investigation.
All of this expertise and experience is applied to the unique aspects of commercial vehicle crash investigation. Our staff has testified in criminal and civil cases involving commercial vehicles throughout the United States and Canada.