How long does a field sobriety test take? For drivers who’ve been pulled over as a suspect for driving while intoxicated, the process from the traffic stop to a blood or breath sample at the police station can take from one and a half to two and a half hours. Criminal defense attorney Shawn McDonald explains in this video how a time lapse could work in the drivers favor.
For a DWI charge to hold ground, it must be proven that the driver was intoxicated at the time of his or her offense, and not just at the time his blood was drawn or breath sample obtained. This is where defense attorneys could use evidence of “retrograde extrapolation” to potentially help the outcome of your case. Retrograde extrapolation is the computation back in time of a blood or breath test result to estimate the level of alcohol in someone’s body at the time he or she was actually driving.
In some DWI cases, criminal defense attorneys can show in a case that the driver’s blood alcohol concentration (BAC) was likely below the legal limit at the time of driving and peaked at the time of testing. If your DWI case involves evidence of retrograde extrapolation, contact us for a free consultation.
Video Transcript:
Interviewer: “How long typically when you’re pulled over and you’re going through the sobriety test, how long does that usually… do they have a time limit for it? Like, do they say, ‘Hey, we got to get this going in 15, 20, 30 minutes, an hour? Like is there ever a time limit to that? I know that may be a weird question, but I just wonder if they’re like trying to move this thing along.”
Shawn McDonald: “Not typically. I mean, the officer just does his investigation. I mean, you’ll have a stop, you’ll have field sobriety test, interview, placed into custody, reading the DIC-24, and then by the time you get to the station to provide a breath sample or blood sample, you’re looking at…”
Amanda Bolin: “Hour.”
Shawn McDonald: “Hour and a half?”
Interviewer: “Ok.”
Shawn McDonald: “To two and a half hours.”
Interviewer: “Ok.”
Shawn McDonald: “They have to wait for the car to be towed. They have to inventory the vehicle. So you have a pretty substantial amount of time from the stop to providing a breath sample. Which is a lot of our argument in defending DWIs is “Well when you stopped him, he may not have been a .08. When you took his breath test two and a half hours later, he was a .10. Well was he a .06 at the time you stopped him? Because it’s not… they have to prove you were driving while intoxicated, not intoxicated when you provided a breath sample. So if you were .10 two and a half hours later, well, could you have been a .06 when they stopped you? It very well could have been a 15 as well. So that’s a lot of our argument if it’s a close call it’s like, well you… what we call retrograde extrapolation is… they can’t show at the time you were driving that you were over a .08. They can just show at the time you provided a breath sample you were say a 12 a .12.”
Disclaimer
*This blog post, “How long does a field sobriety test take?”, is for general information purposes only. Nothing on this site should be taken as legal advice for any individual case or situation. This information is not intended to create, and receipt or viewing does not constitute, an attorney-client relationship.