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Charles H. Williams,
Attorney and Counselor
at Law, P.S.
707 South Snoqualmie
Street,
Suite 4A
Seattle, WA 98108

Phone:206-707-8524
Toll free:800-854-3458
Seattle Law Office Map

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Useful DUI Abbreviations and Acronyms

  • BAC - breath (or blood) alcohol concentration
  • BF - bail forfeiture
  • BUI - boating under influence
  • C - committed (infraction)
  • CAD - computer-aided dispatch
  • CD - chemical dependency
  • CrRLJ - rules for courts of limited jurisdiction (district and municipal courts)
  • CRT - court
  • D - dismissed, defendant
  • DOL - Washington State Department of Licensing, abstract of driving record
  • DCH - defendant case history
  • DP - deferred prosecution
  • DPA - deputy prosecuting attorney
  • DRE - drug recognition expert
  • DUI - driving under influence
  • DWI - driving while intoxicated (same as DUI)
  • DWLS/R - driving while license suspended or revoked
  • EHM - electronic home monitoring
  • FST - field sobriety test
  • FTA - defendant's failure to appear in court as required
  • G - guilty (crime)
  • GERD - gastro-esophageal reflux disease
  • HBD - "had been drinking"
  • HGN - horizontal gaze nystagmus
  • ICW - implied consent warning (RCW 46.20.308)
  • IID - ignition interlock device
  • IIL - ignition interlock license
  • IN - non-traffic infraction
  • IT - traffic infraction
  • JIS - judicial information system used by Washington state district courts
  • MIP/C - minor in possession of or consuming alcohol
  • MVA - motor vehicle accident
  • NC - not committed (infraction)
  • NG - not guilty (crime)
  • OLS - one-leg stand test
  • P - plaintiff
  • PBT - portable breath test
  • PC - probable cause
  • POM - possession of marijuana
  • PR - release on personal recognizance, parking
  • PT - pretrial hearing
  • RCW - Revised Code of Washington (state statutory law)
  • RFI - radio frequency interference
  • SCRAM - secure continuous remote alcohol monitor
  • SMD - speed measuring device (e.g., radar, laser, speedometer)
  • SRA - Sentencing Reform Act (state statute governing felony sentences)
  • VA - vehicular assault
  • VH - vehicular homicide
  • VIO - violation
  • WAC - Washington Administrative Code
  • WAT - walk and turn test
  • WPIC - Washington Pattern Instructions, Criminal (instructions by judge to jurors in criminal cases)
  • WSP - Washington State Patrol
  • WSTL - Washington State Toxicology Laboratory

BAC Estimation Using Widmark Formula

BAC equation: BAC = (150/B) x A x (C/50) x 0.025%, where:

B = Body weight (lbs.);
A = Amount of alcohol beverage, based on size and no. of containers (ozs.); and
C = Concentration of alcohol in beverage (%).

To estimate BAC at a later given time, you must also:

a) know the elapsed time (hrs.) from first drink until the BAC time and
b) assume the following hourly dissipation rates for alcohol:

  • Low: 0.015% per hr.
  • Medium: 0.018% per hr.
  • High: 0.020% per hr.

Example: A 220 lb. man drinks 7 pints of beer and 10 shots of whiskey from 5 p.m. to 1 a.m. At 4:00 a.m. he has a car accident and is arrested for DUI. At the time of the accident, what was his BAC? Three steps:

1. Determine BAC for each beverage separately and then add them together:

    a) Beer: (150/220 lbs.) x 112 oz. x (4%/50) x 0.025% = 0.153%

    b) Whiskey: (150/220 lbs.) x 10 oz. x (43%/50) x 0.025% = 0.147%

    c) Total BAC: 0.153% + 0.147% = 0.300%

    2. Determine elapsed time from first drink (5 p.m.) to accident (4 a.m.): 11 hrs.

    3. Subtract dissipated alcohol from total to determine BAC at 4 a.m.: Total BAC - (dissipation rate x no. of hrs. after first drink) - thus:

    0.300% - (0.015% x 11 hrs.) = 0.135%
    0.300% - (0.018% x 11 hrs.) = 0.102%
    0.300% - (0.020% x 11 hrs.) = 0.080%

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