The TSRP January Traffic Tuesday webinar discussed the rising BAC defense commonly used in DWI/DUI cases.  It covered issues related to retrograde extrapolation calculations and Widmark’s Formula for calculating a person’s likely BAC at the time of driving based on a variety of factors including the person’s gender and weight and the amount of alcohol consumed.  The webinar also discussed how to most effectively defend against the rising BAC defense in court.

View the Recording >

Title: The Myth of the DUI Defense: Rising BAC

Date: January 13, 2015


  • Brandon Hughes, Traffic Safety Resource Prosecutor for Alabama
  • Dr. Curt Harper, Toxicology Section Chief, Alabama Department of Forensic Services