Colorado DUI and DWAI Defense

A DUI or DWAI arrest can place your driver’s license, finances, employment, freedom, and reputation at risk. The situation can become more serious when the allegation involves a prior offense, a refusal to provide a chemical sample, a high blood-alcohol result, a traffic accident, an injury, or drugs in addition to alcohol.

An arrest is not a conviction. The prosecution must prove the charge, and the evidence should be carefully examined before decisions are made about a plea, hearing, or trial.

Thomas A. Ramunda Jr. represents clients facing DUI, DWAI, drug-related driving charges, refusal allegations, repeat offenses, and related Colorado DMV proceedings. He investigates the circumstances of the stop, arrest, testing, and police investigation to identify legal, factual, and scientific issues that may affect the case.

DUI and DWAI Under Colorado Law

Colorado recognizes separate alcohol- and drug-related driving offenses.

Driving under the influence, commonly called DUI, generally means that alcohol, drugs, or a combination of both affected a person to the degree that the person was substantially incapable of exercising clear judgment, sufficient physical control, or due care in the safe operation of a vehicle.

Driving while ability impaired, commonly called DWAI, generally involves impairment to the slightest degree so that the person is less able than ordinarily to exercise clear judgment, sufficient physical control, or due care.

A person may face a charge involving:

• Alcohol
• Marijuana
• Prescription medication
• Illegal drugs
• Over-the-counter medication
• A combination of alcohol and one or more drugs

A valid prescription does not necessarily prevent a charge if the prosecution alleges that the substance impaired the person’s ability to drive safely.

Potential Consequences of a DUI or DWAI

The consequences depend on the charge, the evidence, the person’s driving and criminal history, and whether aggravating circumstances are alleged.

Possible consequences may include:

• Jail
• Probation
• Fines and court costs
• Community service
• Alcohol or drug evaluation
• Education and treatment requirements
• Driver’s-license revocation
• Ignition-interlock requirements
• Increased insurance expenses
• Vehicle and transportation costs
• Employment or professional consequences
• Immigration consequences in some cases
• A permanent criminal or driving record

Colorado penalties generally become more severe when a person has prior alcohol- or drug-related driving convictions. A fourth or subsequent qualifying offense may be prosecuted as a felony under Colorado law.

Two Separate Cases: Court and DMV

A DUI arrest can create two different proceedings.

The criminal case is handled through the court system. It determines whether the prosecution can prove DUI, DWAI, or another charged offense and what criminal sentence may be imposed.

The administrative license case is handled by the Colorado Division of Motor Vehicles. It determines whether the driver’s privilege should be revoked or otherwise restricted because of a test result, refusal, or other qualifying event.

The two proceedings operate independently. A dismissal or reduction in the criminal case does not necessarily prevent a DMV revocation. Likewise, the result of a DMV hearing does not determine guilt in the criminal case.

Deadlines in the DMV process can be short. A driver should promptly review the notice received from law enforcement or the DMV and determine whether a hearing must be requested.

The Traffic Stop

A DUI investigation often begins with a traffic stop. An officer must have a legally sufficient basis to stop or detain a vehicle.

The defense may examine:

• The reason stated for the stop
• Whether the alleged traffic violation occurred
• The officer’s observations before the stop
• Dash-camera or body-camera footage
• Dispatch records
• The duration and scope of the detention
• Whether the investigation was unlawfully prolonged
• Whether the officer had reasonable suspicion of impaired driving

If the stop or detention violated constitutional requirements, the defense may seek to suppress evidence obtained as a result.

Roadside Sobriety Tests

After a stop, an officer may ask the driver to perform roadside sobriety maneuvers. These are often called field sobriety tests or standardized field sobriety tests.

The three commonly recognized standardized maneuvers are:

• Horizontal gaze nystagmus
• Walk-and-turn
• One-leg stand

These roadside maneuvers are generally used to gather evidence and help an officer decide whether probable cause exists for an arrest. They are different from the evidential blood or breath test requested under Colorado’s express-consent law.

A driver’s performance may be affected by matters unrelated to alcohol or drugs, including:

• Age
• Injuries
• Medical conditions
• Balance problems
• Footwear
• Uneven pavement
• Poor lighting
• Weather
• Fatigue
• Anxiety
• Confusing or incomplete instructions

The defense should evaluate whether the officer properly explained, demonstrated, administered, observed, and scored each maneuver.

Declining roadside maneuvers is not the same as refusing an express-consent blood or breath test. The legal consequences are different.

Preliminary Breath Testing

An officer may sometimes request a handheld roadside breath test during the investigation. This preliminary device is different from the evidential breath-testing instrument used after arrest.

The circumstances surrounding a preliminary breath test should be reviewed carefully, including whether the driver was accurately advised about the request, whether the device was used properly, and how the result was used to establish probable cause.

Probable Cause for Arrest

Before making a DUI arrest, an officer must have probable cause to believe that the person drove or was in actual physical control of a vehicle while impaired or under the influence.

Officers may rely on observations such as:

• Driving behavior
• Odor of alcohol or marijuana
• Speech
• Balance and coordination
• Appearance of the eyes
• Statements by the driver
• Presence of alcohol, drugs, or paraphernalia
• Performance on roadside maneuvers
• A preliminary breath-test result
• Witness statements
• Evidence from an accident scene

Each observation must be considered in context. Many commonly cited signs of impairment may have innocent explanations or may be affected by medical, environmental, or emotional conditions.

Colorado’s Express-Consent Law

Colorado’s express-consent law applies when an officer has the legally required grounds to believe that a person drove while impaired by alcohol, drugs, or both.

Following a qualifying arrest, the officer may request an evidential chemical test. Depending on the circumstances, this may involve breath or blood testing. Drug-related investigations generally require blood testing.

A chemical test requested under the express-consent law is different from voluntary roadside sobriety maneuvers.

Refusing a properly requested chemical test can lead to a separate driver’s-license revocation and other consequences. A refusal may also become evidence in the criminal case. The precise issues depend on whether the officer had lawful grounds for the request, whether the advisement was properly given, and whether the person’s conduct legally amounted to a refusal.

Breath-Test Evidence

Breath testing is not infallible. A defense review may examine:

• Whether the testing instrument was approved and properly maintained
• Calibration and certification records
• Whether the operator was qualified
• Whether required procedures were followed
• The observation period before testing
• Mouth alcohol or contamination
• Medical conditions that could affect the result
• Radio-frequency or environmental interference
• Whether multiple results were consistent
• The timing of the test in relation to driving

A numerical result does not eliminate the need to evaluate how the sample was obtained and whether the testing process complied with applicable standards.

Blood-Test Evidence

Blood evidence may raise legal and scientific questions concerning both collection and analysis.

The defense may investigate:

• Whether the blood draw was lawfully authorized
• Who drew the blood
• Whether an approved collection kit was used
• Whether the sample was properly labeled
• Chain of custody
• Storage and transportation
• Fermentation or contamination
• Laboratory procedures
• Instrument calibration and quality-control records
• Measurement uncertainty
• Whether an independent test is appropriate

The reported concentration at the time of testing may also lead to disputes about the person’s concentration at the earlier time of driving.

Refusal Cases

A refusal allegation can have significant DMV consequences. It can also affect the criminal case because the prosecution may attempt to use the alleged refusal as evidence.

Not every difficult, incomplete, delayed, or unsuccessful test is necessarily a lawful refusal. Relevant questions may include:

• Whether the officer had lawful grounds to request the test
• Whether the express-consent advisement was accurately provided
• Whether the driver understood the request
• Whether language, hearing, or cognitive issues affected communication
• Whether a medical condition interfered with testing
• Whether the driver attempted to cooperate
• Whether the officer improperly denied a reasonable testing option
• Whether the test could not be completed because of equipment or procedural problems

The facts should be examined through reports, video, audio, testing records, and witness testimony rather than relying only on the refusal label in the citation.

DUI Involving Drugs

A drug-related DUI, sometimes called DUID, may involve marijuana, prescription medication, illegal substances, or a combination of drugs and alcohol.

Drug cases can be especially complex because the presence of a substance does not always establish when it was consumed, whether it was active, or whether it impaired the person’s driving.

The defense may examine:

• The driving behavior
• The officer’s training and observations
• Drug-recognition evaluation procedures
• Medical explanations for observed symptoms
• The type and amount of substance detected
• Active and inactive metabolites
• Prescription history
• Laboratory methodology
• The relationship between the reported level and actual impairment
• Whether multiple substances interacted

The prosecution must prove the legal elements of the charged offense, not merely that a substance was found in a sample.

Marijuana and Driving

Colorado’s legalization of marijuana does not permit impaired driving. At the same time, marijuana evidence is different from alcohol evidence.

THC levels may not correlate with impairment in the same way that alcohol concentration often does. Frequency of use, timing, metabolism, method of consumption, and individual tolerance may affect both test results and observed behavior.

A marijuana-related charge requires careful examination of the stop, observations, roadside investigation, blood collection, laboratory analysis, and the prosecution’s interpretation of the result.

DUI Accidents and Injury Cases

A DUI allegation involving a collision may expose a person to substantially more serious charges and consequences.

The investigation may include:

• Accident reconstruction
• Vehicle data
• Surveillance footage
• Cellphone evidence
• Witness interviews
• Medical records
• Toxicology
• Statements made at the scene or hospital
• Evidence concerning who was driving
• Causation of injury or death

Cases involving serious bodily injury or death may lead to felony allegations such as vehicular assault or vehicular homicide. These cases require immediate and thorough investigation.

A traffic accident alone does not establish that a driver was impaired or that impairment caused the collision.

Prior and Repeat Offenses

Prior convictions can dramatically affect charging decisions, plea negotiations, sentencing exposure, license consequences, treatment requirements, and ignition-interlock obligations.

The defense should verify:

• Whether the alleged prior conviction belongs to the client
• Whether the prior case qualifies under Colorado law
• Whether an out-of-state offense is substantially similar
• Whether the records are accurate and admissible
• Whether the prior plea was constitutionally valid
• Whether multiple matters arose from separate criminal episodes

A person should not assume that the prosecution’s description of the prior history is automatically correct.

Underage DUI and UDD Matters

Drivers under 21 may face additional consequences under Colorado’s underage drinking-and-driving laws. A lower alcohol concentration can trigger administrative action even when the evidence does not support an ordinary adult DUI charge.

An underage case may affect:

• Driving privileges
• School
• Employment
• Insurance
• College or scholarship opportunities
• Future background checks

Parents and young drivers should address both the court and DMV aspects promptly.

Commercial Drivers

A DUI-related incident can have particularly serious consequences for a commercial driver. CDL disqualification rules may apply even when the person was driving a private vehicle.

Commercial drivers should consider:

• Federal and state disqualification rules
• Employer reporting obligations
• Lower commercial-vehicle alcohol limits
• Hazmat endorsements
• Employment contracts
• The effect of a refusal
• Whether diversion or deferred disposition is legally available
• Long-term employability

A resolution that appears manageable for a noncommercial driver may end a commercial driving career.

Sentencing and Treatment

When a person is convicted, the court may impose a sentence involving jail, probation, fines, useful public service, alcohol or drug evaluation, education, and treatment.

The required level of education or treatment may depend on the person’s history, test result, evaluation, and other circumstances. The DMV may impose requirements separate from those ordered by the court.

Completing treatment ordered in the criminal case does not necessarily satisfy every DMV reinstatement condition. The two agencies should be addressed separately.

Ignition Interlock and License Reinstatement

A driver whose privilege is revoked may be eligible for reinstatement after satisfying statutory and DMV requirements. Depending on the case, early reinstatement may be available with an ignition-interlock device.

Requirements may include:

• Serving a required period without driving
• Filing an application
• Paying reinstatement fees
• Maintaining SR-22 insurance
• Installing ignition interlock
• Completing alcohol or drug education and treatment
• Providing proof of compliance
• Resolving all other license restraints

A revocation does not necessarily end automatically when the stated period expires. The driver generally must complete the DMV reinstatement process before lawfully driving again.

Defending a DUI or DWAI Case

A meaningful defense requires more than reviewing the BAC number or police report. Tom may investigate:

• The legality of the traffic stop
• The length and scope of the detention
• The officer’s observations
• Body-camera and dash-camera footage
• Roadside sobriety testing
• Probable cause for arrest
• Express-consent advisements
• Breath- or blood-testing procedures
• Laboratory records
• Chain of custody
• Medical explanations
• Witness statements
• Accident evidence
• Prior-conviction allegations
• DMV hearing issues

Depending on the evidence, the defense may seek suppression of evidence, dismissal, acquittal, reduction of charges, mitigation of penalties, preservation or restoration of driving privileges, or another appropriate resolution.

No lawyer can guarantee dismissal, acquittal, or a particular sentence. The objective is to identify weaknesses in the prosecution’s case, protect the client’s rights, and pursue the best result supported by the facts and law.

DUI and DWAI Matters Handled by South Denver Law

South Denver Law represents clients in matters involving:

• DUI
• DWAI
• Drug-related DUI
• Marijuana-related DUI
• Express-consent refusals
• Blood- and breath-test cases
• DMV revocation hearings
• Repeat alcohol- or drug-related offenses
• Underage drinking and driving
• Commercial-driver cases
• DUI accidents
• Vehicular assault allegations
• Vehicular homicide allegations
• Ignition-interlock and reinstatement issues
• Probation and sentencing matters

Experienced Colorado DUI Representation

Being arrested for DUI or DWAI does not prove guilt. Police observations, roadside testing, chemical testing, laboratory analysis, and administrative procedures can all be challenged when the facts and law support doing so.

Tom provides focused representation in Denver, Parker, Castle Rock, Centennial, Littleton, and courts throughout the surrounding Colorado communities. He works to protect each client’s rights, driving privileges, record, employment, and future.

Because court dates and DMV hearing deadlines may arise quickly, prompt action matters.

Contact the law office of Thomas A Ramunda Jr. to discuss a DUI, DWAI, drug-related driving charge, refusal, or DMV matter.