Forensic Traffic Specialists, PLLC, is a forensic engineering firm providing investigation, reconstruction, and expert witness services for crashes involving traffic control devices.

Serving the entire United States, clients include defense and plaintiff attorneys, criminal defense attorneys, criminal prosecutors, public and private loss managers, and insurance investigators and claims adjusters.

Traffic signal and traffic control device crash reconstruction and accident investigation requires an expert witness experienced in designing and understanding traffic signals and traffic control devices. Daren E. Marceau, founder of Forensic Traffic Specialists, PLLC is the author of Accident Reconstruction at Traffic Signal Intersections, the leading text on this subject, and is an instructor for police, insurance, and legal professionals.