A driver agrees to a required formal test but refuses the collection consent form required by the authorized clinic. What does the cooperation rule say?
Correct answer: Required collection forms are part of cooperation; refusal can count as refusing testing.
The statute includes signing release or consent forms required by authorized specimen collectors. Noncooperation with those collection requirements is treated as a refusal.
Source: Colorado Revised Statutes 2026, section 42-4-1301.1 (3); current on September 13, 2026. ↗
A driver deliberately stops cooperating before completing the chosen formal test, with no medical or statutory exception. Does starting the test satisfy the duty?
Correct answer: No. Failure to complete and cooperate is treated as a refusal.
Expressed consent requires completion and cooperation, not just selecting or starting a test. The scenario excludes medical inability and other exceptions that may change the procedure.
Source: Colorado Revised Statutes 2026, section 42-4-1301.1 (2)(a)(II); current on September 13, 2026. ↗
A driver has already given a sample for a preliminary roadside breath screen. Does that screen replace a later lawfully required formal expressed-consent test?
Correct answer: No. The preliminary screen does not substitute for the formal test.
Colorado expressly distinguishes the preliminary screening test from the tests required by expressed consent. A qualifying formal request can still require completion afterward.
Source: Colorado Revised Statutes 2026, section 42-4-1301.1 (7); current on September 13, 2026. ↗
During a lawful contact, an officer describes a preliminary breath screening test and advises that the driver may agree or refuse. How is this different from a qualifying formal test request?
Correct answer: That preliminary screen is voluntary; the formal testing duty is separate.
The preliminary-screen provision requires an advisement that the driver may agree or refuse. Do not confuse that screening procedure with the separate expressed-consent test requirements.
Source: Colorado Revised Statutes 2026, section 42-4-1301 (6)(i)(I); 42-4-1301.1 (7); current on September 13, 2026. ↗
An officer has probable cause of drug-impaired driving and reasonably requires formal drug testing under expressed consent. Is an alcohol breath sample the only kind the law can require?
Correct answer: No. The drug-testing provision includes blood, saliva and urine tests.
The drug-testing provision covers blood, saliva and urine when the legal conditions are met. The driver must cooperate so the required sample can be obtained within two hours of driving.
Source: Colorado Revised Statutes 2026, section 42-4-1301.1 (2)(b)(I)-(II); current on September 13, 2026. ↗
A driver refuses to cooperate with a required formal chemical test and later stands trial for DUI or DWAI. Must the refusal be kept out of the trial evidence?
Correct answer: No. The formal-test refusal may be admitted as evidence.
The statute makes refusal of the required formal testing admissible in a later DUI or DWAI trial. This is not the same rule as the voluntary preliminary screen, and admissibility is not an automatic conviction.
Source: Colorado Revised Statutes 2026, section 42-4-1301 (6)(d); current on September 13, 2026. ↗
An adult rear-seat passenger in an ordinary private car holds an open can containing beer while the car travels on a public highway. The driver is sober. Is the passenger’s possession allowed just because the passenger is not driving?
Correct answer: No. The passenger-area rule also applies to that passenger.
In an ordinary private car, a person in the passenger area may not knowingly possess an open alcohol container on a public highway or its right-of-way. Driver sobriety does not create a passenger exemption.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (1)(d) and (2)(a); current on September 13, 2026. ↗
A partly used wine bottle still contains wine and has been recapped. Does replacing the cap make it a sealed, unopened container under Colorado’s rule?
Correct answer: No. A broken seal or partly removed contents still meets the definition.
The definition includes a container holding alcohol that is open, has a broken seal, or has had some contents removed. Recapping a partly used bottle does not undo those facts.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (1)(c); current on September 13, 2026. ↗
In an ordinary car on a public highway, does putting an open alcohol container in the glove compartment place it outside the defined passenger area?
Correct answer: No. The law specifically includes the glove compartment.
The passenger area includes spaces readily accessible from a seating position and specifically includes the glove compartment. Hiding a container there does not make it outside the rule.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (1)(d); current on September 13, 2026. ↗
A person in an ordinary private car parked on a public highway’s right-of-way starts drinking beer. Does being stopped rather than moving remove the state’s passenger-area restriction?
Correct answer: No. The rule also applies on the highway’s right-of-way.
The statute covers a motor vehicle on a public highway or its right-of-way, not only a vehicle currently moving. The scenario is not one of the listed passenger or storage exceptions.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (2)(a); current on September 13, 2026. ↗
Under Colorado’s statewide alcohol-container rule, which location is a listed possession exception in a vehicle that has no trunk?
Correct answer: The area behind the last upright seat.
For a vehicle without a trunk, the statute lists the area behind the last upright seat as a possession exception. This does not authorize drinking, impaired driving or violating stricter local rules.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (2)(b)(III) and (3); current on September 13, 2026. ↗
A front-seat passenger in a vehicle used primarily to transport people for compensation claims the paid-transport alcohol exception. Does that exception include the front passenger?
Correct answer: No. It excludes both the driver and the front-seat passenger.
The specific paid-transport passenger exception excludes the driver and front-seat passenger. It is not a vehicle-wide permission to possess or drink alcohol.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (2)(b)(I); current on September 13, 2026. ↗
An ordinary sedan has a separate trunk that occupants cannot access from their seats. Is that trunk part of the passenger area defined in Colorado’s alcohol-container rule?
Correct answer: No. It is outside the seating and readily accessible passenger area.
The defined passenger area consists of seating and areas readily accessible from seating positions. The isolated trunk in this scenario is outside it; that does not excuse drinking or impaired driving.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (1)(d) and (2)(a); current on September 13, 2026. ↗
In an ordinary private car traveling on a public highway, an adult passenger uses marijuana. Does being a passenger make that consumption lawful under the vehicle rule?
Correct answer: No. The passenger-area prohibition also covers marijuana use.
The rule prohibits knowingly using or consuming marijuana in the passenger area on a public highway or its right-of-way, subject to specific exceptions. Ordinary private-car passengers do not receive a general exemption.
Source: Colorado Revised Statutes 2026, section 42-4-1305.5 (2)(a)(I); current on September 13, 2026. ↗
For Colorado’s statutory open-marijuana-container definition, a container holds marijuana, has an open or broken seal, and has had some contents removed. What additional element is listed?
Correct answer: Evidence that marijuana has been consumed within the vehicle.
All the listed elements, including evidence of consumption within the vehicle, appear in the marijuana-container definition. Do not substitute the different alcohol-container definition. Marijuana use in the passenger area is separately prohibited.
Source: Colorado Revised Statutes 2026, section 42-4-1305.5 (1)(c)(I)-(III) and (2)(a)(I); current on September 13, 2026. ↗
A traveler finds an exception in Colorado’s statewide open-container law. Does that state law prevent a city from applying an open-container ordinance that is more restrictive?
Correct answer: No. The state law allows local ordinances that are no less restrictive.
Both the alcohol and marijuana vehicle-container statutes preserve authority for local ordinances that are no less restrictive. A limited state exception is not a blanket exemption from local rules.
Source: Colorado Revised Statutes 2026, section 42-4-1305 (3); 42-4-1305.5 (3); current on September 13, 2026. ↗
