TL;DR: Colorado intrastate carriers obtain a PUC permit and state ID, with insurers filing Form E proof under Rule 6008 at limits mirroring federal tiers: $750,000 for property carriers over 10,000 pounds, hazmat at federal amounts. Towing and movers carry enhanced requirements, workers comp starts at the first employee, and brokers require $1,000,000.
Which rules apply to trucking in Colorado?
Two aligned layers. Interstate freight runs on the federal scheme: FMCSA authority, 49 CFR 387.9 tiers, insurer-filed BMC certificates, the MCS-90. Intrastate operations run through the Colorado Public Utilities Commission: carriers obtain a PUC permit and state identification number, and under PUC Rule 6008 file proof of liability coverage, a Form E certificate, a Form G surety bond, or self-insurance, referencing that state ID. Colorado then aligns the substance with federal law by adopting the FMCSR Part 387 requirements for intrastate carriers, so the limits match across layers: $750,000 for general freight over 10,000 pounds, federal amounts for hazmat.
Who needs what from the PUC?
| Operation | Colorado requirement |
|---|---|
| Intrastate property carriage | PUC permit, state ID, Form E filing at $750,000 CSL over 10,000 lbs |
| Household goods movers | PUC regulated category with its own permit and insurance regime |
| Towing carriers | $750,000 CSL with first-dollar payment, on-hook cargo, garagekeepers where vehicles are stored |
| Passenger carriers | Separate PUC categories and filings |
| Interstate carriers | Federal authority, BMC filing, MCS-90; PUC layer for intrastate legs |
The alignment of state and federal limits is the practical good news: one policy at the $1,000,000 broker standard clears the PUC filing, any federal filing, and every contract at once, with no restructuring when intrastate operations add interstate lanes.
How do the filings work?
Through the insurer, referencing your PUC state ID: the Form E certificate is the standard proof for property carriers, with the Form G bond and self-insurance as alternatives, and filings must match the carrier's PUC record exactly. Cancellation notices end filings on schedule, and a permit without active proof is a suspension in progress. Interstate carriers maintain the federal filing in parallel; the two systems live independently, and each belongs on the renewal checklist.
What else does Colorado require?
Workers compensation from the first employee, purchasable from private insurers or Pinnacol Assurance, the competitive state fund, under the Division of Workers' Compensation. Colorado ended its no-fault system in 2003, so no PIP layer attaches to trucks; insurers must offer $5,000 medical payments coverage, rejectable in writing. The contract layer is standard: $1,000,000 liability, $100,000 cargo, certificates that clear broker compliance before freight moves.
What defines Colorado trucking risk?
The mountains, mostly. The I-70 corridor's grades, chain law, tunnel restrictions, and runaway-truck exposure produce the state's signature severity, and winter closures shape operations for months. The Front Range adds Denver-metro congestion and a rising verdict trend, hail ranks among the country's worst for physical damage, and the energy fields of Weld County generate their own hauling economy with oilfield exposures. Underwriters ask about mountain routes by name, and documented chain-law compliance and mountain driver experience are priced assets.
Where are Colorado requirements verified?
The PUC's transportation pages for permits and filing rules, the Colorado State Patrol's new-carrier resources for the Part 387 adoption, the Division of Workers' Compensation for coverage questions, and the Division of Insurance, 303-894-7499, for policy matters.
Real questions Colorado owner-operators and fleet managers ask
Does Colorado require intrastate operating authority?
Yes, through the PUC: a permit and state identification number, with insurer-filed proof of coverage under Rule 6008, Form E for most property carriers. Regulated categories like household goods, towing, and passenger carriage have fuller permit regimes.
What are Colorado's minimum truck insurance limits?
Colorado adopts the federal Part 387 levels for intrastate carriers: $750,000 combined single limit for general freight over 10,000 pounds and federal amounts for hazmat. The alignment means one policy clears both state and federal layers.
What is special about towing insurance in Colorado?
Towing carriers face enhanced PUC requirements: $750,000 liability with first-dollar payment on third-party claims, on-hook cargo coverage for towed vehicles, and garagekeepers coverage where customer vehicles are stored. It is one of the fuller state towing regimes.
When does a Colorado trucking company need workers comp?
From the first employee, through private insurers or Pinnacol Assurance, the competitive state fund. Colorado's mountain-trade injury profile makes trucking class rates real money, and misclassification of drivers carries the usual penalties.
Does Colorado have PIP on commercial trucks?
No. Colorado ended no-fault in 2003 and is an at-fault state; insurers must offer $5,000 med-pay, rejectable in writing. Injury claims against carriers proceed against liability limits, with Denver-metro verdicts trending upward.
Can Morrow write trucking insurance in Colorado?
Not directly today. Morrow is the brand name of Afthonea Inc, licensed in Massachusetts, Florida, California, New York, Pennsylvania, Oregon, and Texas. If your trucking company is based in Colorado, we can refer you to a licensed Colorado agent, and this guide still shows you exactly what to ask that agent for. Everything above comes from public Colorado and federal sources, not from us selling you a policy.
Related Colorado trucking guides
The other Colorado trucking questions, answered the same way.
- Trucking insurance in Colorado (start here)
- Trucking insurance requirements
- Intrastate authority and filings
- Minimum liability limits for trucks
- Cost of trucking insurance
- Business insurance in Colorado
- Federal minimum liability limits by commodity
- What is an MCS-90 endorsement?
- Federal minimum liability limits by commodity
- Trucking and transportation insurance overview
This guide is general information, not legal, tax, or insurance advice. Limits, forms, and deadlines change, so verify current requirements with the Colorado PUC and the Colorado Division of Insurance before you rely on them. Morrow is a brand name of Afthonea Inc. Last updated: July 2026.