Whatever Happened to the Presumption of Innocence?

Posted by Lawrence Taylor on November 3rd, 2004

In most countries of the world, an accusation by the State forces the accused to prove himself innocent. In America, however, the presumption of innocence has always been a fundamental part of our rights as a free people. This basic protection against the power of the government has been recognized as flowing from the 5th, 6th and 14th Amendments to our Constitution. As the United States Supreme Court has said, "The principle that there is a presumption of innocence in favor of the accused is the undoubted law, axiomatic and elementary, and its enforcement lies at the foundation of the administration of our criminal law." Coffin v. U.S., 156 U.S. 432 (1895).

So what happened to this presumption of innocence in a drunk driving case? Is this yet another example of "the DUI exception to the Constitution"? Let’s take a look at how our DUI laws have slowly eroded this fundamental right….

Let’s assume you have been arrested for drunk driving, and a Breathalyzer gave a reading of .09% blood-alcohol concentration (BAC). You will probably be charged with two crimes: (1) driving under the influence of alcohol, and (2) driving with over .08% BAC. Let’s look at the .08% charge first.

The .08% offense depends entirely upon the results of the breath machine (often called a "Breathalyzer", although there are many makes and models). These machines are notorously unreliable for any number of reasons. But a funny thing happens when your attorney tries to bring out those reasons for the jury. He tries to point out, for example, that the Breathalyzer computes the results by presuming that the defendant has a "partition ratio" of 2100:1 (the ratio of alcohol in the breath to the alcohol in the blood) — but that this is only an average: the defendant’s ratio is much lower, so the .09% reading should actually be .07%. However, the judge stops him: the law presumes that all men are average — even if they are not.

In fact, the Supreme Court of California has specifically ruled that such scientific facts are irrelevant. People v. Bransford, 884 P.2d 70 (1994). The Court justified its ruling in a rather frank — and amazing — justification: "It (.08%) will increase the likelihood of convicting such a driver, because the prosecution need not prove actual impairment…Adjudication of such criminal charges will also require fewer legal resources, because fewer legal issues will arise. And individuals prosecuted under such a statute will be less likely to contest the charges." In other words, ignoring scientific facts makes it easier to convict.

What about the officer who gave the breath test? Surely, we can question his experience and the way he administered the breath test. And this raises a prosecutrial favorite: the "Offical Duty Presumption". The California Evidence Code (sec. 664) puts it very simply: It is presumed that official duty has been regularly performed." Period. That’s it: Since it was the officer’s official duty to give the test, the law presumes he was qualified and did it correctly. And the burden is on the defendant to prove he didn’t. Interesting twist on the presumption of innocence, huh?

Well, so much for the .08% charge. At least the defendant is presumed innocent of the DUI charge, right? Wrong. The laws of most states create a presumption of guilt: if the Breathalyzer reads .08% BAC or higher, the jury will be instructed that the defendant is legally presumed to be under the influence of alcohol. That’s right: the defendant is presumed guilty. This is called a "rebuttable presumption" — that is, the defendant can try to rebut this presumption with other evidence. Put another way, he is presumed guilty and the burden is on him to prove his innocence. Just like in third world countries.

Ok, but the law says it’s illegal to have .08% BAC when driving — not when tested an hour later at the police station. If, for example, a person has a drink or two before driving, the alcohol will not be absorbed into the system for an hour or so: it will not be in his system while driving, but will be reaching peak BAC levels when tested an hour later at the station. So how does the prosecution prove BAC at the time of driving?

Easy: the law presumes the BAC is the same. Let’s take a look at California’s fairly typical law: "In any prosecution…it is a rebuttable presumption that the person had 0.08 percent or more, by weight, of alcohol in his or her blood at the time of driving the vehicle if the person had 0.08 percent or more, by weight, of alcohol in his or her breath at the time of the performance of a chemical test within thre hours of the driving." Well, now, that’s really amazing. The Legislature simply passed a law against scientific truth. We can absolutely say, with scientific certainty, that the BAC will NOT be the same for three hours after the test.

So much for the "presumption of innocence" in a DUI case….

Trackbacks & Pingbacks

  1. […] Just to make things worse….As I indicated, attempts to guess BACs when driving earlier than when tested have been condemned by scientists. This makes things tough for prosecutors. Solution? As I discussed in an earlier post, “Whatever Happened to the Presumption of Innocence?“, most states today have passed laws — contrary to scientific truth — which presume that the BAC at the time of being tested is the same as at the time of driving! In other words, unless the defendant can prove that his BAC was different than when tested, the jury will be instructed that they must find that it is the same. In effect, the defendant is presumed guilty. And since there is no evidence of the BAC when driving, there is no way for the defendant to rebut the presumption. […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — December 6, 2006 @ 11:18 am

  2. […] All states now have two drunk driving laws: (1) driving under the influence of alcohol (aka “DUI”, with local variations, such as “driving while intoxicated” or “DWI”), and (2) the so-called per se law of driving with .08% or higher blood-alcohol concentration (BAC). Most of those arrested will be charged and prosecuted for both offenses. The breath machines (commonly — and inaccurately — referred to as “Breathalyzers”) used to obtain the BAC are, obviously, critical to the drunk driving case. As for the per se offense, the only evidence of the crime is the machine: if the thing says .08% or higher and the jury believes it, the defendant is guilty. And even as to the DUI charge, the readings will be considered presumptive: if the BAC is .08% or higher, the jury will be instructed by the judge that the defendant is presumed guilty — and he must be found guilty unless he can prove his innocence (I’ve discussed this in “Whatever Happened to the Presumption of Innocence?“). These machines are all-important: they determine guilt or innocence. But their manufacturers continue to assure us that they are “state of the art”. So how accurate are they? Well, as I’ve written in the past, not very: Breathalyzers — and Why They Don’t Work Close Enough for Government Work The Mouth Alcohol Problem Breathalyzers: Why Aren’t They Warranted to Measure Alcohol? Driving Under the Influence of….Bread? Warning: Breathalyzer in Use Breath Fresheners and Breathalyzers Diabetes and the Counterfeit DUI Why Breathalyzers Don’t Measure Alcohol Can Body Temperature Affect Breathalyzer Results? The Effect of Anemia of Breath Tests GERD, Acid Reflux and False Breathalyzer Results Driving Under the Influence of….Gasoline? Do Breathalyzers Discriminate Against Women? Breathalyzer Inaccuracy: Testing During the Absorptive State Breathalyzer Inaccuracy: Post-Absorptive Breathalyzer Inaccuracy….It Gets Worse Warning: Smoking Can be Hazardous to Breathalyzer Results How to Fool the Breathalyzer Breathalyzer Manufacturers Won’t Tell How They Work […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — December 11, 2006 @ 2:58 pm

  3. […] I have written repeatedly in the past about the prevailing presumption of guilt that prevails in drunk driving cases (see “Whatever Happended to the Presumption of Innocence?“). One example of this is the automatic driver’s license suspension (see “Due Process and Automatic License Suspensions“), where among other things the arresting officer acts as judge, jury and executioner in arresting the suspect, seizing his license and issuing a formal notice of suspension. (Note: this occurs even if a blood rather than breath test is given, so there will be no test result from the lab for days; it is presumed that the driver is guilty — over .08% — and it is also presumed that there will eventually be evidence to show it.) The following news story simply reflects the latest in a long list of examples of “The DUI Exception to the Constitution“: California Institutes New Penalties for Drunk Drivers Sacramento, Calif. — Drivers committing a repeat drunk-driving offense in California have their vehicles seized under existing state law, but it doesn’t happen until after they are convicted. Under a new law to take effect Sunday, drivers in California can lose their cars upon arrest — before they are convicted — if they have committed a drunk driving offense in the previous decade…. The new rules are intended to teach drunk drivers a strict lesson after an offense occurs and to deter impaired motorists from getting behind the wheel. […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — December 11, 2006 @ 3:17 pm

  4. […] A few weeks ago I posted about a courageous Virginia judge who was throwing out DUI cases because he found the state’s presumptions of guilt to be unconstitutional. It was a violation of the Constitution’s presumption of innocence, he ruled, to presume that (1) the defendant is guilty of driving under the influence of alcohol if the breath machine’s reading was over .08%, and (2) the blood-alcohol level was the same at the time of driving as when tested an hour or two later. These patently false presumptions and insidious violations of the Constitution are found in all 50 states, as I pointed out in an earlier post entitled “Whatever Happened to the Presumption of Innocence?“. A higher court in Virginia has now reviewed the ruling. In essence, the higher judge found the statute itself to be constitutional — but further held that guilt could not be conclusively presumed, only inferred. Such a presumption, the judge wrote in his opinion, would “diminish the requirement of the state to prove a defendant’s guilt beyond a reasonable doubt”. However, the judge went on, the statute itself is not unconstitutional if the presumption is viewed as a permissive one, rather than conclusive. In other words, the defendant should be permitted to produce evidence that he was not under the influence of alcohol when driving. The higher court judge found that the existing instructions to the jury were constitutionally impermissible and must be changed: the jury should be told that they were permitted to find the defendant not guilty if the totallity of evidence raised a reasonable doubt as to whether he was, in fact, under the influence at the time of driving. All of which should seem obvious, and is the law in most states. But the very existence of this and other laws designed solely to facilitate convictions in DUI cases continues to be an insult to basic notions of fairness and to the Constitution itself. Share: […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — December 11, 2006 @ 3:19 pm

  5. […] The breath machines (commonly — and inaccurately — referred to as “Breathalyzers”) used to obtain the BAC are, obviously, critical to the drunk driving case. As for the per se offense, the only evidence of the crime is the machine: if the thing says .08% or higher and the jury believes it, the defendant is guilty. And even as to the DUI charge, the readings will be considered presumptive: if the BAC is .08% or higher, the jury will be instructed by the judge that the defendant is presumed guilty — and he must be found guilty unless he can prove his innocence (I’ve discussed this in “Whatever Happened to the Presumption of Innocence?“). […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — January 23, 2007 @ 1:35 pm

  6. […] Whatever Happened to the Presumption of Innocence? […]

    Pingback by DUI BLOG : Bad Drunk Driving Laws, False Evidence and a Fading Constitution — March 25, 2007 @ 3:06 pm


Comments

  1. As a former Texas peace officer, I often wonder does anyone think about the presumption of innocence when they see a fellow citizen handcuffed in the back of a patrol car.  I don’t believe they give it one consideration.  We seem to be dulled to the effect that an arrest has on us and those about us.  It is sad to see the system more concerned with statistics and enforcement instead of a true desire to clear the name of those falsely accused.  In Texas, if you are taken to a trial and found not guilty, it is still your responsibility and your expense that will get your arrest record erased, after a court hearing. The courts should have the responsibility to see that it is done at no cost to the citizen and without any action required by the citizen. later

    Comment by Jamie — November 1, 2004 @ 7:01 pm

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