Phoenix DUI Law Blog

In the vast majority of Arizona DUI cases, the applicable law that governs the case is that of the jurisdiction where the offense occurred. However, in very rare circumstances, another state’s laws may apply. This puts state courts in the difficult position of applying a foreign jurisdiction’s law. In a recent Arizona DUI case, the…

Law enforcement officers frequently focus their DUI enforcement efforts on long weekends and holidays under the assumption that people are more likely to drink and drive when they are out celebrating with friends and family. According to a recent news report, there were a total of 503 Arizona DUI arrests over Memorial Day weekend. Of…

In April 2019, the U.S. Supreme Court heard oral argument in a case that may call into question the constitutionality of a significant part of Arizona’s implied consent statute. The specific question posed by the case is whether a law that allows a blood test from an unconscious driver provides an exception to the Fourth…

Expert testimony is often necessary in Arizona DUI cases. Therefore, understanding the use and limits of expert testimony is essential. In a recent Arizona DUI case, an appellate court considered whether the trial court exceeded its authority in limiting expert testimony. According to the court’s decision, the defendant was driving in Tucson, when his car…

In a recent case, an Arizona court of appeals held that an Arizona DUI sentence should stand because the court’s correction of the unlawful sentence was made too late. According to the court’s opinion, in 2016, the defendant was convicted of aggravated driving under the influence and aggravated driving with a Blood Alcohol Content (BAC)…

Recently, a state appellate court issued an opinion in an Arizona DUI case discussing the elements of an aggravated DUI under Arizona Revised Statutes (A.R.S.) section 28-1383(A)(3). Ultimately, the court determined that the prosecution established evidence of each element, and affirmed the jury’s guilty verdict. According to the court’s opinion, the defendant was driving a…

The issue of implied consent has been a hot topic in courts across the United States since the Supreme Court decided Birchfield v. North Dakota, which allowed warrantless breath tests to be conducted (but disallowed warrantless blood tests). In its most recent Arizona DUI opinion, the Arizona Supreme Court discussed whether Arizona’s implied-consent statute requires…

A few posts ago, we discussed Arizona’s implied consent statute, which provides that anyone who operates a vehicle on a public road implicitly consents to chemical testing if police suspect they are under the influence. In the post, we also discussed that while motorists have no legal basis for refusing a test, they cannot be…

The most common type of chemical test performed by police in Arizona DUI cases is breath testing. Breath testing measures the amount of alcohol in a person’s breath and converts the figure to blood-alcohol content. Police prefer breath testing in many cases because it is faster and less expensive than blood or urine testing. Practically…

Police officers have an interest in removing intoxicated drivers from the road. However, in trying to locate and arrest potentially drunk drivers, police officers must respect the rights of all motorists. Thus, police officers can only stop a vehicle under certain circumstances. For the most part, an officer must observe some indicia of dangerous driving…