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720-445-9887If you were arrested for DUI in Denver, you may be dealing with two problems at once: a criminal charge and a separate driver’s license process through the Colorado DMV. Decisions and deadlines can come quickly, especially when breath or blood testing, a chemical-test refusal, or a notice of revocation is involved.
At the Law Office of Kevin Cahill, you work directly with Denver DUI lawyer Kevin Cahill. Kevin personally handles his clients’ cases and can help you understand the criminal allegations, the DMV and express-consent issues affecting your driving privileges, and the defense options available based on the evidence.
Colorado DUI cases can involve alcohol, marijuana, prescription medication, or other drugs. The consequences also vary depending on whether you are facing DUI, DWAI, a first offense, a repeat offense, or a felony DUI. This guide explains those issues and what you can do after an arrest.
Colorado recognizes multiple alcohol- and drug-related driving offenses under C.R.S. § 42-4-1301.
A person may be charged with DUI if alcohol, one or more drugs, or a combination of both affects them to a degree that renders them substantially incapable of safely operating a vehicle. DUI is often associated with alcohol cases, but the same basic offense also applies to marijuana, prescription medication, and other drugs.
DWAI is a lesser offense than DUI, but it still carries serious consequences. A person may be charged if alcohol, drugs, or both affect them to the slightest degree so that they are less able than they ordinarily would have been to safely operate a vehicle.
Colorado also has a separate offense for certain underage drivers. UDD generally applies when a driver is under 21 and has a BAC of at least 0.02 but not more than 0.05 at the time of driving or within two hours after driving. That lower threshold is why UDD is sometimes described as Colorado’s “zero-tolerance” underage alcohol-driving law.
Colorado does not create a separate standalone offense called “marijuana DUI.” Instead, marijuana-impaired driving is prosecuted under the same DUI/DWAI statute that applies to other drugs and alcohol. That means police and prosecutors do not treat marijuana impairment as a lesser category simply because marijuana is legal in some circumstances under Colorado law.
Yes. A person may be charged with DUI or DWAI if officers believe marijuana affected their ability to drive safely. The statute expressly covers driving under the influence of one or more drugs.
Colorado law provides that if there was 5 nanograms or more of delta-9 THC per milliliter in whole blood, that fact gives rise to a permissible inference that the person was under the influence of one or more drugs. That is important, but it is not the same thing as an automatic conviction or a strict per se marijuana limit. The prosecution may still rely on other evidence, and the defense may still challenge impairment.
Yes. Officers may still arrest and prosecutors may still file charges based on driving behavior, roadside investigation, officer observations, admissions, and other evidence. The 5-nanogram rule is an evidentiary inference, not the only way to prove a marijuana-related DUI.
Colorado law states that possession of a valid medical marijuana registry card, by itself and without other contributing factors, does not constitute probable cause to require a driver to submit to an analysis. But lawful use of marijuana, including medical marijuana, does not prevent a DUI or DWAI charge if law enforcement claims the person was impaired while driving.
Colorado also prosecutes impaired driving involving prescription medication under the same DUI/DWAI statute. There is no separate, more forgiving category simply because the medication was lawfully prescribed. If prosecutors claim the medication affected the person’s ability to drive safely, the case can be charged the same way as other drugged-driving cases.
Yes. Colorado law applies to driving under the influence of one or more drugs, and being legally entitled to use a drug under Colorado law does not automatically provide a defense to DUI or DWAI. A lawful prescription does not prevent criminal charges if the state alleges impairment.
Prescription-drug DUI cases often arise from allegations involving:
From a legal standpoint, the source of the drug matters less than whether the prosecution can prove impaired driving under Colorado law.
These cases can be especially fact-sensitive because the driver may have taken medication for a legitimate medical reason and may not have believed they were impaired. Colorado law still focuses on whether the substance affected the driver’s judgment, physical control, or due care in the safe operation of a vehicle.
Defense issues often include:
These cases often require careful analysis because the presence of a drug in the body is not always the same thing as impairment.
Penalties depend on the charge, BAC level, whether alcohol, marijuana, or prescription drugs are involved, and prior history.
A first-offense DUI can carry:
A first-offense DWAI can carry:
A first offense can also lead to:
Penalties increase significantly for repeat offenses or cases involving accidents, injuries, or aggravating facts.
Underage drivers face a different legal structure than drivers who are 21 or older. In Colorado, the most common underage alcohol-driving offense is Underage Drinking and Driving (UDD) rather than standard DUI. Learn more about these cases from our underage DUI defense lawyer.
UDD applies to a person under 21 who drives with a BAC of at least 0.02 but not more than 0.05. If the BAC is higher, or if the prosecution believes there is a greater level of impairment, the underage driver may instead face DWAI or DUI charges.
A first UDD offense can bring:
A second or subsequent UDD offense is more serious and can include:
Even though UDD may look less severe than adult DUI on paper, it can still create meaningful consequences for a young driver, including issues involving:
Colorado’s express-consent rules still matter in underage alcohol-driving cases. A licensed driver can face significant administrative consequences for refusing required testing, even if the driver believes the amount of alcohol consumed was minimal.
The key difference is not that young drivers are always treated more leniently. They are held to a lower BAC threshold for UDD. If the BAC or evidence of impairment is high enough, an underage driver may still face DWAI or DUI charges.
A second-offense DUI is still generally a misdemeanor in Colorado, but the consequences increase substantially. If you are facing another impaired-driving charge after a prior conviction, our second-offense DUI lawyer can review how your record affects the current case.
DUI or DWAI with one previous qualifying DUI or DWAI conviction can carry:
Administrative consequences can also become more serious, including longer driver’s license restraints and additional reinstatement requirements.
A second DUI often changes the posture of the case. The defense may need to address:
A second DUI is not automatically a felony in Colorado. DUI, DUI per se, or DWAI generally becomes a class 4 felony only when the current violation occurs after three or more prior qualifying convictions arising from separate and distinct criminal episodes.
If a DUI-related case involves serious bodily injury or death, prosecutors may also file separate felony charges such as:
Those are separate offenses from a standard second-offense DUI and should be analyzed independently.
A third-offense DUI is still generally a misdemeanor in Colorado, but the penalties become substantially more serious. A third-offense DUI lawyer can help you understand the increased criminal and driver’s license consequences that may apply.
DUI or DWAI with two previous qualifying convictions can carry:
Administrative penalties may also increase significantly, including longer driver’s license revocation periods.
A third qualifying major traffic offense within the applicable period may also create habitual traffic offender consequences. Because that determination depends on the person’s record and the qualifying offenses involved, a DUI attorney should review the actual driving history.
A third DUI is not automatically a felony in Colorado. Felony DUI generally applies when the current DUI, DUI per se, or DWAI offense follows three or more qualifying prior convictions.
Third-offense cases often require attention to sentencing strategy as well as the underlying evidence. Depending on the case, the defense may focus on:
Colorado treats DUI, DUI per se, and DWAI as class 4 felonies when the current case occurs after three or more prior qualifying convictions arising out of separate and distinct criminal episodes. If that describes your situation, learn more about Kevin’s approach to felony DUI defense.
Felony DUI is triggered by repeat-offender status rather than simply by the fact that the current case is serious. In practical terms, that usually means:
A DUI case can also involve separate felony charges when someone is seriously injured or killed. Those are distinct crimes rather than simply another form of felony DUI.
The basic distinction is:
A felony conviction can affect:
Depending on the facts, a defense may focus on:
The available strategy depends on the current case, prior-conviction history, and evidence the prosecution can prove.
Colorado’s express-consent law requires drivers to submit to chemical testing in qualifying circumstances when an officer has probable cause to believe they were driving under the influence of alcohol, drugs, or both. In alcohol cases, that may involve breath or blood testing. Marijuana and prescription-drug DUI investigations commonly involve blood testing.
If you refuse a required chemical test, the consequences can affect both your driver’s license and the criminal case. A refusal can result in DMV revocation, may be used as evidence in court, and can create additional ignition-interlock requirements.
The DMV process moves separately from the criminal case, and deadlines for challenging a license action can be short. The exact procedure may also differ depending on whether the case involves a breath test, blood test, or refusal. If you received a notice or other DMV paperwork after a Denver DUI arrest, review it promptly rather than waiting for your criminal court date.
A Denver DUI attorney can help you evaluate both sides of the case and determine what steps need to be taken to address your driving privileges.
One of the most important things to understand about Colorado DUI cases is that there are often two separate tracks happening at once.
The criminal case addresses issues such as:
The separate administrative process may address:
These matters move on different timelines and may require separate legal strategy. Resolving one side does not necessarily resolve the other, which is why both should be addressed after a DUI arrest.
A DUI arrest in Colorado can trigger driver’s license suspension or revocation through the DMV, separate from what happens in criminal court. That means you may be dealing with license consequences even while the court case is still pending.
For a more detailed explanation, see our guide to restoring driving privileges after a DUI.
In many DUI cases, one of the first practical problems is the loss of driving privileges. The exact length of restraint can depend on the type of case, prior history, whether the person refused chemical testing, and whether early reinstatement with ignition interlock is available.
Getting back on the road is not necessarily automatic when a restraint period ends. Reinstatement may require an application, fees, proof of insurance, ignition interlock, treatment documentation, or other materials depending on the case.
Some drivers may qualify for early reinstatement with an ignition interlock device before completing the full period of license restraint. Eligibility and the length of the interlock requirement depend on factors such as prior history, BAC, refusal status, and the type of license action.
Refusing chemical testing can create more serious license and interlock consequences than some test-result cases. Whether and when early reinstatement is available depends on the driver’s history and DMV requirements.
Certain high-BAC and repeat-offense cases may trigger persistent drunk driver requirements, which can affect reinstatement, ignition interlock, treatment, and other administrative obligations.
Depending on the case, reinstatement may involve:
A person arrested for DUI should think about driving privileges right away rather than waiting for the criminal case to end. DMV deadlines can be short, and reinstatement can require planning. Violating interlock or restricted-license requirements can also create additional problems.
Being arrested for DUI does not mean the prosecution can automatically prove the charge. A Denver DUI defense attorney can examine the traffic stop, officer observations, field sobriety testing, chemical testing, and other evidence to determine whether there are grounds to challenge the case. The defenses available depend on the specific facts.
Police must have a lawful basis for stopping a vehicle. If the stop was unlawful, that issue may affect evidence obtained afterward.
Breath and blood testing may raise issues involving:
Performance on roadside tests may be affected by factors such as:
Drugged-driving cases may raise additional issues, including:
Problems involving the traffic stop, search, arrest, questioning, or collection of evidence may affect whether certain evidence can be used.
Defense strategies depend on the specific facts of each case.
A DUI conviction may result in:
The consequences vary based on the charge, prior history, DMV action, and other circumstances.
If you are arrested for DUI:
Early action can be especially important because the criminal case and DMV process may begin moving at the same time. Keep your citation, testing paperwork, notice of revocation, bond paperwork, and any other documents you received.
You should also avoid assuming that a breath or blood test result means there is nothing to defend. Testing procedures, the traffic stop, officer observations, timing, and other evidence may still matter.
If you were recently arrested, speaking with a Denver DUI lawyer can help you identify immediate issues and understand what happens next. Kevin Cahill personally reviews his clients’ cases and can address both the criminal allegations and driver’s license consequences arising from the arrest.
A DUI means alcohol, one or more drugs, or both affected the driver to a degree that made the person substantially incapable of safely operating a vehicle. A DWAI means the person was affected to the slightest degree so they were less able than usual to drive safely.
DUI per se generally involves driving with a BAC of 0.08 or more at the time of driving or within the applicable statutory period after driving. It is distinct from impairment-based DUI, although both charges may arise from the same incident.
Yes. Marijuana-impaired driving is prosecuted under Colorado’s general DUI and DWAI laws. A THC result may be part of the evidence, but the prosecution can also rely on driving behavior, officer observations, admissions, and other circumstances.
Yes. A lawful prescription does not automatically prevent a DUI or DWAI charge if prosecutors allege that the medication impaired your ability to drive safely.
A refusal can trigger separate driver’s license consequences through the DMV and may also be used as evidence in the criminal case. Refusal cases can also involve additional ignition-interlock requirements.
DUI, DUI per se, or DWAI generally becomes a class 4 felony when the current violation occurs after three or more qualifying prior convictions arising from separate criminal episodes.
In some cases, yes. Certain drivers may qualify for early reinstatement with ignition interlock. Eligibility depends on the type of restraint, prior history, testing or refusal status, and other DMV requirements.
As soon as practical. DMV issues can arise quickly after an arrest, and early involvement gives a DUI attorney more opportunity to review the stop, testing, video, paperwork, and other evidence while addressing both the criminal and administrative sides of the case.
A DUI defense attorney can advise you about both the criminal court case and the separate DMV process. Because the two tracks operate independently, it is important to understand what must be done in each.
After a DUI arrest, you may be worried about both the criminal charge and whether you will be able to keep driving. You do not have to sort through those issues on your own.
At the Law Office of Kevin Cahill, you work directly with Denver DUI lawyer Kevin Cahill. Kevin personally handles his clients’ cases and represents people facing DUI, DWAI, marijuana-related DUI, prescription-drug DUI, repeat offenses, and felony DUI charges in Denver and throughout Colorado.
Our law office can evaluate the traffic stop, testing or refusal issues, officer observations, DMV consequences, and other evidence that may affect your case. You can also learn more about our criminal defense practice and felony DUI defense.
If you were recently arrested for DUI or DWAI in Denver, acting quickly can help you address both the criminal case and time-sensitive driver’s license issues. Contact the Law Office of Kevin Cahill to schedule a consultation.
Denver Defense Lawyer Kevin Cahill never assumes that your case is a lost cause. He is a confident and fearless litigator who refuses to back down when he is fighting to protect the rights of his clients. Regardless of whether you are facing a felony or a misdemeanor, it is vital that you take the charges seriously and seek out legal representation as soon as possible so you can start building your defense.