What is BAC simulation?
BAC simulation models how alcohol concentration may rise and fall over time based on drinking-pattern facts, subject characteristics, test timing, and stated assumptions.
What BAC Simulation Models
DUI Professional models the relationship between alcohol dose, drinking pattern, body weight, distribution assumptions, absorption timing, elimination assumptions, and measured alcohol results. The goal is not to reduce a complex timeline to one unsupported number. The goal is to make assumptions visible so attorneys, experts, and training professionals can evaluate whether a claimed timeline is internally consistent.
Why Range-Based Analysis Matters
Alcohol concentration changes over time. A test result taken after an incident does not automatically establish the alcohol concentration at an earlier time. Current forensic guidance treats retrograde extrapolation as an estimation process and emphasizes ranges, case history, specimen considerations, post-absorptive status, population variation, and documentation.
Key Variables In A Professional BAC Model
- Beverage type and alcohol concentration
- Quantity consumed and partial-drink estimates
- Drinking start time and stop time
- Body weight and distribution assumptions
- Food, stomach contents, and absorption timing
- Specimen type, test time, and measured result
- Elapsed time between incident and testing
- Elimination-rate range and post-incident drinking facts
What DUI Professional Provides
DUI Professional helps users create drinking timelines, visualize expected BAC curves, mark key case times, compare scenario assumptions, save simulations, and generate reports. These outputs can help focus expert consultation, legal strategy, training, and education.
What The Software Does Not Do
DUI Professional does not determine guilt, impairment, admissibility, or the legal sufficiency of evidence. It provides structured BAC scenario modeling and report support for qualified professional review. Legal conclusions and forensic opinions should be made by appropriately qualified professionals using case-specific facts, jurisdiction-specific law, and applicable scientific standards.
Frequently Asked Questions
What is BAC simulation?
BAC simulation is the process of modeling how alcohol concentration may rise and fall over time based on drinking-pattern facts and pharmacokinetic assumptions.
Why does DUI Professional use assumptions instead of a single exact BAC?
Alcohol absorption, distribution, and elimination vary between people and circumstances. Range-based modeling is more scientifically cautious than presenting one unsupported number.
Who should use BAC simulation software?
DUI attorneys, prosecutors, forensic toxicologists, expert witnesses, law enforcement trainers, CLE instructors, forensic laboratories, civil litigators, workplace-safety professionals, and alcohol-education users may use BAC simulation to organize and test timeline assumptions.
Can DUI Professional determine whether a person was impaired?
No. The software models alcohol concentration scenarios. Legal and forensic conclusions require qualified professional judgment and case-specific evidence.
Model BAC assumptions with clearer documentation
Register for an evaluation account, review pricing, and test DUI Professional with the types of alcohol timeline questions you review today.
Sources
These references support the scientific and forensic context discussed on this page.
- ANSI/ASB Best Practice Recommendation 122, First Edition 2024 Current forensic alcohol calculation guidance for assumption-based alcohol calculations, reporting, specimen considerations, and limitations.
- NIST OSAC Standards Library entry for ANSI/ASB BPR 122-24 Registry context for ANSI/ASB Best Practice Recommendation 122-24.
- NIAAA, Alcohol Metabolism Ethanol metabolism, ADH and ALDH pathways, and individual variation in alcohol processing.
- Jones, A.W., Evidence-based survey of ethanol elimination rates, 2010 Forensic context for ethanol elimination-rate variation and retrograde extrapolation review.
