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Licence rules · medium

Under Colorado's distracted-driving law, what is the general rule about holding and using a mobile phone while driving?

  1. A Phones are prohibited only on interstate highways
  2. B Texting is prohibited but holding the phone for calls is permitted
  3. C Phones may be used freely at any speed provided the driver keeps one hand on the wheel
  4. D Holding and manually using a phone while driving is prohibited; use is limited to hands-free operation, and holding the phone even at a red light counts as driving Correct

Why D is correct

Colorado's distracted-driving rules draw the line at the hand: a phone in the driver's hand is a violation in itself, and the operating definition of 'driving' includes the moments stopped at a light or in traffic, because the vehicle is in the roadway and the driver is in control of it. The hands-free standard exists because the manual component — holding, touching, reading at an angle — is the physical anchor of the distraction, and the crash data ties handheld use to lane departures and rear-end crashes with unusual consistency. Hands-free systems carry their own cognitive load, but they remove the part of the behaviour the law can actually see and reach.

Why the other options are wrong

A. Phones are prohibited only on interstate highways
Red lights are part of driving in the law's definition: the driver is operating a vehicle in traffic, and the stop is a phase of the operation, not an exemption from it. The phone goes down when the engine is off and the car is out of the lanes.
B. Texting is prohibited but holding the phone for calls is permitted
Interstate highways are where handheld use is most dangerous, not exempted. The rule is statewide and speed-independent, applying identically on a residential street and an interstate.
C. Phones may be used freely at any speed provided the driver keeps one hand on the wheel
The one-hand-on-wheel compromise is the exact loophole the law closed. The violation attaches to the phone in the hand, not to the number of hands remaining on the wheel.

On the road

A commuter at a long red light picks up the phone from the cupholder to check a message — and meets a motorcycle officer in the next lane making the same observation from outside the glass. The light was red, the car was stopped, and the citation stands, because the law's definition of driving includes exactly that moment. The phone now lives in the console mount, spoken to and never held.

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Every question on this page is written in our own words and is not copied from the handbook. Reviewed by Ethan Wen on 2026-10-18.