The maximum blood alcohol concentration allowed for a commercial truck driver under federal law is 0.04 grams per deciliter. It is exactly half the 0.08 limit that applies to the majority of drivers in the United States, as stated in 49 CFR 382.201. Utah has set its own limit even lower. Since December 30, 2018, Utah has enforced a 0.05 BAC limit for all drivers. It the strictest per se limit in the country, as specified in Utah Code 41-6a-502. When an 80,000-pound tractor-trailer merges onto I-15 through Salt Lake County or ascends the slope on I-80 near Parleys Canyon, the small difference between "legal" and "impaired" can have life-or-death consequences.
If a truck driver in Utah fails a drug or alcohol test after a crash, it is not merely the result of one legal issue. A positive test triggers two separate procedures at the same time. A federal investigation into trucking compliance, which could bring an end to the driver's career. A civil claim in Utah that can make both the driver and the trucking company financially liable. The data on commercial motor vehicle safety kept by the NHTSA shows that large truck drivers test positive for alcohol in fatal crashes much less frequently than do drivers of passenger vehicles. That is precisely the reason why a positive result in a Utah truck crash is so significant to regulators, prosecutors, and juries. The following explains step by step what occurs next and highlights the areas where BAM Personal Injury Lawyers sees the greatest potential for injured Utah residents to hold negligent drivers and carriers liable.
The general belief is that a failed drug or alcohol test will result in a DUI charge. In fact, a drug or alcohol-positive accident involving a truck in Utah sets in motion two separate lines of action.
The initial test is the responsibility of the Federal Motor Carrier Safety Administration (FMCSA). As soon as the test result is positive or the driver refuses to take it, the federal regulations come into effect to restrict the driver's ability to work, no matter what occurs in a Utah court.
The second one is Utah's responsibility. The Utah Highway Patrol or local police examine the crash scene. Utah prosecutors decide whether to file criminal charges. The civil courts determine who must compensate the injured. Both proceedings rely on the same evidence, yet follow different rules, meet different deadlines, and apply different burdens of proof.
The figures below demonstrate that a truck driver may qualify as “legal” under standard Utah driver’s license rules, yet violate federal trucking regulations at the exact same blood‑alcohol concentration.
| Driver Type | Alcohol Threshold | Controlled Substance Rule | Legal Source |
| Any driver in Utah | 0.05 g/dL BAC | Any detectable illegal drug can support a DUI charge | Utah Code 41-6a-502 |
| CDL holder performing a safety-sensitive duty | 0.04 g/dL BAC | Zero tolerance; any result at or above the federal cutoff counts as a violation | 49 CFR 382.201 |
| CDL holder before going on duty | Cannot report for duty within 4 hours of consuming any alcohol | Not applicable | 49 CFR 392.5 |
Note that the federal drug rule does not consider whether the driver appeared impaired. Unlike a typical DUI stop, DOT drug screening treats any result at or above the federal cutoff level as an automatic violation with no exceptions.
Mandatory testing does not apply to every truck crash in Utah. Federal regulation 49 CFR 382.303 defines the exact circumstances that trigger post‑accident alcohol and controlled‑substance testing.
| What Happened in the Crash | Alcohol Test Required | Drug Test Required |
| A fatality occurred | Yes, always | Yes, always |
| Someone needed treatment away from the scene AND the driver received a citation | Yes | Yes |
| A vehicle needed a tow due to disabling damage AND the driver received a citation | Yes | Yes |
| Injury or tow-away occurred but the driver was not cited | Not federally required | Not federally required |
Here, two deadlines are significant in an injury claim in Utah. Employers must administer alcohol tests within eight hours and drug tests within 32 hours after an accident. If an employer does not give an alcohol test within two hours, it must document the reason. After eight hours, the employer must cease alcohol test attempts and file the required record. Trucking companies cannot avoid these requirements by claiming they missed the deadline. Utah civil courts may treat any missed or delayed required test as evidence of improper investigation.
Any positive test result or refusal to submit to testing triggers a strict mandatory sequence of procedures.
| Violation | Standard Disqualification | If Hauling Placarded Hazardous Materials |
| First positive test, refusal, or 0.04+ BAC | Minimum 1 year | Minimum 3 years |
| Second violation | Lifetime (limited reinstatement may be possible after 10 years under specific FMCSA conditions) | Lifetime |
The prosecutors in Utah proceed with bringing criminal charges without going through the federal compliance procedure mentioned above. Authorities typically charge a truck driver who tests positive after a Utah crash with standard DUI under Utah Code § 41-6a-502. Courts upgrade these charges to a felony when the crash causes serious bodily injury under Utah Code § 41-6a-503. If a crash leads to a death, then the prosecutors have the option of bringing charges of automobile homicide under Utah Code 76-5-207, which is a second-degree felony in many cases.
Prosecutors file these cases in the district court for the county where the accident occurred. For example, authorities assign crashes on Interstate 15 in Salt Lake County to Utah’s Third District Court. They send accidents in Utah County near Provo to the Fourth District Court. They handle incidents on Interstate 15 in Weber or Davis County near Ogden in the Second District Court.
Criminal and personal injury civil cases proceed on separate tracks under different rules. This structure actually benefits injured parties. Utah criminal courts require proof beyond a reasonable doubt, the highest standard in the legal system. Utah civil courts apply the preponderance of the evidence standard. This means the injured person needs only to show that the driver’s impairment more likely than not caused the accident.
Utah law also includes the principle of negligence per se. It allows an injured party to show that the defendant breached a safety statute. For example, by violating Utah's DUI law, in order to create a presumption of negligence even without having to go into all the details of how the impairment led to the crash. This is important even if the prosecutor reduces the criminal charge as a result of a plea agreement or altogether decides not to bring charges. The toxicology report and the Clearinghouse violation remain as separate evidence in the civil case no matter what happens in the criminal case.
A positive test rarely limits liability to the driver alone. In such cases BAM Personal Injury Lawyers usually looks into three additional sources of compensation.
A drug or alcohol test coming back positive has an effect on a truck accident case. It is only an attorney who is familiar with both the federal trucking regulations and Utah's civil justice system who can turn that evidence into full compensation. BAM Personal Injury Lawyers investigates truck collisions across Utah. We serve cases from the Wasatch Front to rural highway areas. We work to ensure every responsible party bears full accountability. If you would like to get in touch with BAM Personal Injury Lawyers for a free consultation to find out how much your case is worth.
When a commercial truck driver tests positive for drugs or alcohol following an accident, it triggers strict federal FMCSA regulations and opens up liability beyond just the driver. Under Utah personal injury law, motor carriers can be held directly liable for negligent hiring, improper supervision, or failing to enforce mandatory random drug testing protocols. The legal team at BAM Personal Injury Lawyers acts quickly to subpoena post-accident toxicology reports, driver qualification files, and ELD logbook data before evidence is destroyed. Contact us today for a free evaluation of your trucking injury claim.
Under Utah's general statute of limitations, injury victims have four years from the date of the accident in which to bring a personal injury claim pursuant to Utah Code 78B-2-307. In the case of a death caused by the crash, the time limit is reduced to two years from the date of death for a wrongful death claim under Utah Code 78B-2-304. The time limits are unaffected by how long a toxicology lab takes to issue final results. Injured parties should not wait for the final test results before contacting an attorney. If either deadline is missed, the claim is usually permanently barred, even if the drug or alcohol evidence ends up being very strong.
Federal record-keeping rules require trucking companies and their medical review officers to keep test records after an accident. The retention period generally ranges from one to five years, depending on the type of record. An injured person usually cannot ask the company directly for these records. Still, a personal injury lawyer can send a spoliation letter requesting that the company preserve the records and then obtain them through formal discovery or a case-related subpoena. Act promptly. Trucking companies may erase dashcam footage and electronic logging device data within days unless someone requests preservation. Send a spoliation letter within days of the crash. This letter helps secure critical evidence before the company discards it.
The same consequences apply when a driver refuses, as with a confirmed positive result. The employer must remove the driver from duty immediately. The employer must also report the violation to the Clearinghouse as explained above. A driver can refuse in ways other than declining to take the test. For example, by failing to arrive at the testing location on time, tampering with the specimen, or not providing enough breath or urine for a valid sample. In a civil case in Utah, a refusal usually works in the victim's favor because it allows a reasonable inference that the driver had something to hide. Insurance companies are well aware of this, which is one reason refusal cases tend to settle rather than go to trial.
Marijuana is still classified as a Schedule I controlled substance under federal law, and the Department of Transportation enforces a zero-tolerance policy towards all CDL holders regardless of the state in which the driver is from or of what the driver's home state permits. Even a valid medical cannabis card issued under Utah’s program does not exempt a driver from a positive DOT drug test result. A truck driver who tests positive for THC following a crash in Utah will have to report the result to the Clearinghouse and will face the same consequences as a driver who tests positive for any other substance on the panel, namely CDL disqualification.
It is not automatic. Utah applies a modified comparative negligence rule under Utah Code § 78B-5-818. A jury assigns a percentage of fault to the injured party. The victim may recover damages reduced by their assigned share so long as that share remains less than 50 percent. If the jury finds the victim 50 percent or more at fault, the victim recovers nothing. Defense lawyers may claim that the victim's own driving—for example, driving too close or suddenly changing lanes—contributed to the accident regardless of the driver's impairment. Although a positive drug test has considerable importance, the amount of compensation still depends on how the jury or the adjuster apportions fault among all the parties involved in the accident.
In Utah, injury sufferers can generally claim economic damages, including medical expenses, lost wages, and diminished future earning potential, as well as non-economic damages for pain, suffering, and loss of enjoyment of life. If a driver was impaired at the time of the accident, victims may also obtain punitive damages, which Utah permits when the defendant acts with knowing and reckless indifference to the safety of others, as provided in Utah Code 78B-8-201. Punitive damages punish this sort of behaviour and deter similar offenses in the future. Utah juries have in the past regarded driving a commercially loaded truck while impaired as precisely the kind of reckless behaviour the statute is intended to punish, and they consider the seriousness of the injuries, the strength of the evidence showing liability, and the amount of insurance coverage the trucking company has.
Yes, in most instances. A trucking company that dispatches drivers onto roads in Utah, such as the major freight routes I-15, I-80, and I-70, is usually subject to Utah’s laws if an accident occurs there, even if the company is headquartered in a different state. Utah district courts, such as those in Salt Lake City, Provo, and Ogden, regularly handle cases brought against interstate carriers because the company carries on business and causes damage within Utah’s boundaries. However, jurisdiction may become more complicated where there is an overlap of multiple states' or federal regulations, so victims should have an attorney determine the proper court rather than simply assume that the case should be brought in the state where the company is based.
You should get in touch with a personal injury attorney right away so that they can have a written evidence preservation letter sent to the trucking company before the dashcam footage, the electronic logging data, or the internal records are lost. Do not provide a recorded statement to the trucking company's insurance adjuster until your attorney has looked over your case, as the adjuster may use anything you say early on to lower the amount they pay you later. Make sure you keep copies of all your medical records and the crash report from the Utah Highway Patrol, and stay away from posting anything about the accident on social media while the case is ongoing. By taking these actions quickly, you will protect both the evidence and your legal rights as the federal compliance process and any criminal investigation proceed in parallel.
Kigan Martineau is a Partner at BAM Personal Injury Lawyers and an accomplished trial attorney representing injury victims across Utah and Idaho. A graduate at the top of his class from American University Washington College of Law, Kigan specializes in complex motor vehicle crashes, commercial trucking litigation, and wrongful death claims. He achieved the highest settlement in Southern Utah history and has helped secure over $100 million in cumulative resolutions for the firm’s clients.
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