Question 1

What is the fee for a Colorado commercial learner's permit (CLP)?

Accepted Answer

$19 — Colorado charges $19 for a commercial learner's permit.

Question 2

How long is a Colorado CLP valid, and can it be renewed?

Accepted Answer

One year, and not eligible for renewal — As of a 2024 rule change, a Colorado CLP is valid for one year and is not eligible for renewal.

Question 3

What BAC threshold applies specifically to commercial drivers in Colorado?

Accepted Answer

0.04%, half the standard adult threshold — Colorado holds commercial drivers to a 0.04% BAC threshold, consistent with the federal commercial standard.

Question 4

Under federal hours-of-service rules that apply to Colorado CDL holders, how many hours of driving are allowed after 10 consecutive hours off duty?

Accepted Answer

Up to 11 hours, within a 14-hour on-duty window — Federal hours-of-service rules allow up to 11 hours of driving after 10 consecutive hours off duty, within a 14-hour on-duty window.

Question 5

What device rule applies to a Colorado CDL holder under 18?

Accepted Answer

No cell phone use at all, even hands-free — A Colorado driver under 18 may not use a cell phone at all while driving, even hands-free — this applies regardless of CDL status.

Question 6

What must a Colorado CDL applicant complete before the skills test, alongside the knowledge test?

Accepted Answer

Federal entry-level driver training (ELDT) through a registered provider — Colorado CDL applicants must complete federally-required entry-level driver training (ELDT) through an FMCSA-registered provider before the skills test.

Question 7

How old must a Colorado DOT medical examiner's certificate be to remain valid for a CDL applicant?

Accepted Answer

No more than 2 years old — A Colorado CDL applicant's current DOT medical examination can't be more than 2 years old.

Colorado CDL Knowledge Test Sample Questions

General Driving Knowledge

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