Colorado CDL Requirements: DMV Classes, Fees, and the Denver/I-70 Freight Context

Colorado CDL Requirements: DMV Classes, Fees, and the Denver/I-70 Freight Context

Colorado issues CDLs through the Colorado Division of Motor Vehicles (DMV), part of the Department of Revenue. Two Colorado specifics worth flagging: the state pauses non-domiciled CDL/CLP issuance effective 2025-09-29 (following FMCSA rule), and skills tests use the federal CSTIMS (Commercial Skills Test Information Management System). Colorado is a freight crossroads — Denver is a major Mountain West distribution hub and I-70 runs east-west through the state, with significant demand premium for mountain-pass driving.

This guide covers classes, fees, the application process, and Colorado-specific details. For the federal regulatory framework, see our pillars on Hours of Service, ELDT, Clearinghouse, DOT Physical, and DAC Report.

Last verified: 2026-04-18 against Colorado DMV CDL pages and 49 CFR Parts 383 and 380.¹²

Key Takeaways

• Issuing agency: Colorado DMV — dmv.colorado.gov¹
• CDL classes offered: A, B, and C
• Core fees: $17.50 CDL; $19 CLP; $12.30 duplicate (first), $16.40 subsequent duplicates; $11.50 knowledge test retest²
• Age rule: 18 for Colorado intrastate; 21 for interstate (federal)¹
• CLP holding period: at least 14 days before skills test (federal)³
• ELDT required for first-time Class A/B, class upgrade, or first-time H/P/S endorsement⁴
• Renewal cycle: 4 years¹
• Skills testing: via federal CSTIMS system¹
• Non-domiciled CDL/CLP paused effective 2025-09-29 per FMCSA rulemaking¹

Colorado CDL classes

Colorado follows federal class definitions under 49 CFR Part 383:³¹

Age, residency, and eligibility

• Minimum age: 18 for Colorado intrastate; 21 for interstate (federal 49 CFR 391.11).¹
• Colorado residency: required. Hold a valid Colorado driver license and current DOT medical card.¹
• Lawful presence: U.S. citizenship or documented lawful presence.
• Medical certification: Federal MEC (MCSA-5876) per self-certification category; electronic transmission under Medical Certification Integration.⁵

Self-certification categories

Federal self-certification required under 49 CFR 383.71:⁶

• Non-excepted interstate (NI)
• Excepted interstate (EI)
• Non-excepted intrastate (NA)
• Excepted intrastate (EA)

Endorsements available in Colorado

Colorado DMV issues the standard federal endorsement set:¹

• H — Hazardous materials (requires TSA background check)
• N — Tank vehicles
• P — Passenger
• S — School bus (requires P endorsement)
• T — Doubles / triples (Class A only)
• X — Combined H + N (hazmat-tanker)

Current Colorado DMV fees

All fees below are from Colorado's State DMV Fees page, current as of verification on 2026-04-18:²

Colorado's CDL base fee ($17.50) is one of the lowest in the country. Skills testing costs depend on the authorized tester; check with the examiner before scheduling.¹ Our Lease vs Company vs Owner-Op calculator at /cdl/tools/lease-vs-company-vs-owner-op can help evaluate carrier compensation structures.

Verify the current Colorado DMV fee at dmv.colorado.gov/state-dmv-fees on the day of your application.² Our editorial policy re-verifies these figures at least every 180 days.

How to get a Colorado CDL: step by step

Step 1 — Hold a valid Colorado driver license and current DOT medical card

Colorado requires a valid Colorado driver license, a current DOT medical card, and a CLP before CDL issuance.¹

Step 2 — Pass the DOT physical

Find a Certified Medical Examiner (CME) on the FMCSA National Registry.⁵ See our DOT Physical guide for exam preparation.

Step 3 — Apply for the Commercial Instruction Permit (CLP)

Visit a Colorado DMV office. Pay the $19 CLP fee.² Pass vision and CDL knowledge tests.¹

Step 4 — Receive your CLP

Colorado CLP is valid for 180 days under federal standard.³

Step 5 — Complete FMCSA Entry-Level Driver Training (ELDT)

For first-time Class A or Class B applicants, class upgrade applicants, or first-time H/P/S endorsement applicants, ELDT is required at an FMCSA Training Provider Registry (TPR) provider.⁴ See our ELDT guide for the full national process.

Step 6 — Wait the 14-day minimum CLP holding period

Federal rule: at least 14 days between CLP issuance and skills test.³

Step 7 — Schedule and pass the CDL skills test via CSTIMS

Colorado uses the Commercial Skills Test Information Management System (CSTIMS) for skills test scheduling and result verification.¹ The three-part skills test:¹

• Pre-trip vehicle inspection
• Basic vehicle control
• On-road driving

Step 8 — Pay the CDL fee and receive your credential

$17.50 for the 4-year CDL.²

Hazmat endorsement — three gates

Adding H (or X) in Colorado requires:

1. FMCSA ELDT hazmat theory at a TPR provider⁴
2. TSA Hazmat Endorsement Threat Assessment background check and fingerprinting⁷
3. Colorado hazmat knowledge test at a DMV office
4. Colorado DMV endorsement fee — verify current amount²

Be especially mindful of the Clearinghouse requirements when working hazmat — carrier queries will review both your CDL record and your Clearinghouse status.

Colorado medical certification

Under federal Medical Certification Integration, your CME transmits your MEC electronically to FMCSA; Colorado DMV receives it.⁵ Maintain current certification — expired MEC triggers CDL downgrade.

CDL renewal in Colorado

Colorado CDLs are valid for 4 years.¹ Renewal at a Colorado DMV office with current identity documents, MEC if required, and the $17.50 renewal fee.²

Colorado freight landscape (state context)

Four realities shape CDL demand in Colorado:

1. Denver metro distribution. Denver is a major Mountain West distribution hub for retail, e-commerce, and manufacturing. Significant regional and dedicated CDL demand.

2. I-70 mountain-pass freight. I-70 runs east-west through Colorado, with major mountain passes (Vail, Eisenhower Tunnel). Winter driving skill is a premium. Chain laws enforced by CDOT.

3. I-25 North-South corridor. Runs from New Mexico to Wyoming through Denver and Colorado Springs — significant Front Range freight volume.

4. Agricultural and energy hauling. Eastern Colorado agriculture (corn, wheat, cattle) and oil/gas patch hauling on the Front Range add specialty demand.

The practical read: Colorado CDL-A drivers earn a skill premium for mountain-pass operation and winter weather driving. Denver regional work, I-70 OTR, agricultural seasonal, and oilfield hauling create steady demand.

Colorado-specific details worth knowing

• DMV, Department of Revenue. Your issuer is the Colorado DMV, part of the Colorado Department of Revenue.¹
• Non-domiciled CDLs paused effective 2025-09-29 per FMCSA rulemaking.¹
• CSTIMS skills test system — federal database for skills-test scheduling and result verification.¹
• Chain laws on I-70 and other mountain passes enforced by CDOT; CMV chain requirements triggered by weather alerts.¹
• $17.50 base CDL fee — among the lowest state CDL fees nationally.²
• 4-year renewal cycle.¹

Frequently Asked Questions

Q: Why did Colorado pause non-domiciled CDLs? A: FMCSA issued a rule change taking effect 2025-09-29. Colorado DMV paused non-domiciled CDL/CLP issuance and renewal until further notice. Colorado residents (domiciled in the state) continue to be served normally.¹

Q: What is CSTIMS? A: The Commercial Skills Test Information Management System — a federal-state database for CDL skills-test scheduling, examiner verification, and result recording.¹

Q: Do I need a regular Colorado license before a CDL? A: Yes.¹

Q: How long is the Colorado CLP valid? A: 180 days under federal standard.³

Q: Can I test in Spanish? A: No. CDL knowledge tests are English-only nationwide per federal rule (49 CFR 383.133(c)).¹

Q: How much is a Colorado CDL all-in? A: Base Colorado DMV fees: $19 CLP + $17.50 CDL = $36.50.² Add ELDT tuition ($3,500–$8,000 at typical Colorado CDL schools — verify locally), DOT physical ($80–$150), TSA Hazmat fee (separate) if applying for H, skills test fee (varies by authorized tester).

Q: Does Colorado participate in the Military Skills Test Waiver? A: Yes.⁸ Qualified military drivers may waive the skills-test portion.

Q: What about mountain chain laws? A: CDOT triggers chain requirements on mountain passes during winter weather. CMVs must comply or risk citation. Follow CDOT chain-up signage and weather alerts.¹

Q: My MEC expired — will my Colorado CDL downgrade? A: Yes. Colorado DMV will downgrade your CDL to non-commercial if medical certification lapses past the allowable grace period. Restore with a new MEC through the federal electronic system.⁵ See our DOT Physical guide.

Q: Can I transfer an out-of-state CDL to Colorado? A: Yes, if you establish Colorado residency (given the non-domiciled pause). Visit a Colorado DMV office with your out-of-state CDL, proof of Colorado residency, identity documents, and medical self-certification.¹

Q: Are there seasonal demand variations in Colorado CDL work? A: Yes. Winter mountain-pass work, summer construction/tourism, fall agricultural harvest, year-round Denver distribution. Cycle-aware drivers diversify.

Q: What's the skills-test retest process in Colorado? A: After a failed skills test, reschedule via CSTIMS. Additional fees per tester. Knowledge test retest is $11.50.²

Q: I want to lease a truck in Colorado. How do I evaluate the economics? A: Use our Lease vs Company vs Owner-Op calculator with real Colorado fuel prices and expected mile mix. Lease-purchase programs vary significantly; honest math matters.

Sources verified on 2026-04-18

This guide is educational and not legal advice. Fees and rules change; verify current figures at dmv.colorado.gov before applying. Report errors to [email protected]; corrections are logged publicly per our editorial policy.