If a semi-truck, tractor-trailer, box truck, or other commercial vehicle injured you or killed a member of your family in Colorado, a Denver truck accident lawyer can tell you that you are facing a different kind of claim than an ordinary car accident case. The motor carrier’s insurer assigns rapid response adjusters and defense counsel within hours. Electronic data begins overwriting itself immediately. Federal retention rules allow some of the most important records to be destroyed in as little as three months. Mandelaris Law, LLC handles trucking and commercial motor vehicle cases across Colorado, and the firm moves on evidence preservation before the wreckage is cleared.

Call (303) 357-9757 for a free consultation. There is no fee unless we recover for you.

Written by Steven Mandelaris, attorney at Mandelaris Law, LLC, licensed to practice in Colorado since 2006.  Read the full attorney biography.
Last reviewed and updated: July 2026.

Jump to a Section

• How We Help
• Claims at a Glance
• Not a Car Accident Case
• Where Crashes Happen
• Types of Collisions
• Causes & Regulations
• Who Is Liable
• Evidence Preservation
• Colorado Law

• Insurance Coverage
• Damages Available
• What Is My Case Worth?
• Common Injuries
• What to Do Next
• How We Handle Cases
• Attorney Fees
• Areas Served
• FAQ

How a Denver Truck Accident Lawyer at Mandelaris Law Can Help

A Denver truck accident lawyer who focuses on commercial vehicle claims knows how to move quickly against a motor carrier’s insurer, preserve black box and inspection data before it disappears, and value a claim against the true cost of catastrophic injuries. Mandelaris Law, LLC represents injured people and families in Denver and throughout Colorado in these cases, and there is no fee unless we recover for you.

Denver Truck Accident Claims at a Glance

• Deadline to file suit: three years from the collision under C.R.S. 13-80-101(1)(n)(I). A wrongful death claim must be filed within two years under C.R.S. 13-80-102(1)(d). A claim against a public entity requires written notice within 182 days under C.R.S. 24-10-109.
• Fault rule: Colorado applies modified comparative negligence with a fifty percent bar under C.R.S. 13-21-111. A plaintiff who is less than fifty percent at fault recovers, reduced by that percentage.
• Damage caps: noneconomic damages are capped at $1,500,000 for actions filed on or after January 1, 2025, and at $2,125,000 in a wrongful death action, under C.R.S. 13-21-102.5. Economic damages are not capped. Physical impairment and disfigurement are treated separately and are not subject to the cap.
• Minimum truck insurance: $750,000 in public liability coverage for most for-hire interstate carriers of general freight under 49 C.F.R. 387.9, and $5,000,000 for certain hazardous materials carriers.
• Governing safety rules: the Federal Motor Carrier Safety Regulations, 49 C.F.R. Parts 382, 383, and 390 through 399, apply in addition to the Colorado traffic code.
• Fastest-expiring evidence: driver vehicle inspection reports may be destroyed after three months, and records of duty status after six months.
• Definition: a commercial motor vehicle is generally a vehicle with a gross vehicle weight rating of 10,001 pounds or more used in commerce, under 49 C.F.R. 390.5. Delivery vans, box trucks, and dump trucks frequently qualify.
• Fees: contingency fee, free consultation, no fee unless there is a recovery.

Why a Denver Truck Accident Case Is Not a Car Accident Case

Adjusters like to treat a tractor-trailer collision as a larger version of a fender bender. It is not. A commercial motor vehicle claim runs on a separate body of federal regulation, a separate insurance structure, and a separate set of corporate defendants, each with its own exposure and its own reason to point at the others.

That last line is the physics of the whole thing. A fully loaded tractor-trailer carries roughly twenty times the mass of the car it strikes and needs a far longer distance to stop. Nationally, roughly seven of every ten people killed in a large truck crash are occupants of the other vehicle, not the truck. The person in the passenger vehicle absorbs the consequences of the carrier’s decisions about hiring, scheduling, and maintenance.

Where Truck Crashes Happen in Colorado

Colorado’s freight geography concentrates risk in predictable places, and the corridor matters to how a case is built.

The I-70 mountain corridor

Westbound and eastbound I-70 through Floyd Hill, the Eisenhower and Johnson Tunnels, Vail Pass, and Glenwood Canyon combines sustained grades, tight radius curves, altitude, and sudden weather. Colorado Department of Transportation officials have noted that the great majority of runaway truck ramp incidents on record involve out-of-state drivers with less than five years of experience, usually within their first several trips through the corridor, and that overuse of brakes is a common error among inexperienced drivers. CDOT has also pointed out that most crashes on the mountain corridor occur in dry, sunny conditions rather than storms, which undercuts the weather defense carriers reach for first.

Colorado’s commercial vehicle chain and traction law, C.R.S. 42-4-106, and the posted brake check areas and speed restrictions on steep downgrades are frequently at the center of these cases. So is the question of whether the driver received any mountain driving instruction at all before dispatch sent a loaded unit over the Continental Divide.

The Front Range freight corridors

• I-25 from Castle Rock through central Denver to Northglenn, including the Alameda and Santa Fe interchanges and the I-25 and I-70 mousetrap.
• I-70 east of Denver through Aurora, Watkins, Bennett, and Limon toward Kansas, where monotony and fatigue drive the crash pattern.
• I-76 northeast toward Fort Morgan and Nebraska.
• I-270 and I-225, short high-volume connectors with heavy truck traffic and abrupt merges.
• U.S. 85 and U.S. 6 through Commerce City and Adams County, serving rail yards, warehouses, and oil and gas traffic.
• U.S. 285, U.S. 40, and U.S. 550, two-lane mountain routes with limited shoulders and no median.
• Peña Boulevard and the Denver International Airport industrial ring, dense with last mile delivery vans and freight terminals.

Weld County oil and gas traffic, front-end loaders and roll-off trucks on metro construction sites, and the growth of last mile delivery fleets have all added commercial units to Front Range roads that are not classic over-the-road semis but are still subject to federal and state safety obligations.

Types of Commercial Vehicle Collisions

Underride and override collisions

A passenger vehicle slides beneath the trailer, or the truck rides up over the car. The rear impact guard and side underride protection, the conspicuity tape required by 49 C.F.R. 393.11, and whether the trailer was visible at all become the central issues. These crashes are disproportionately fatal because the occupant compartment is destroyed rather than crushed.

Jackknife

The trailer swings out of line with the tractor, usually from braking on a slick or steep surface, from an empty or lightly loaded trailer, or from a brake imbalance between tractor and trailer. Brake adjustment records and load weight distribution drive the analysis.

Rollover

High center of gravity, shifting or liquid cargo, and excessive speed for a curve or ramp. Rollover cases almost always require the load securement and weight documentation, not just the driver’s statement.

Wide turn and squeeze collisions

A tractor swings left to make a right turn and traps a vehicle alongside. Common at metro intersections designed for cars rather than combination units.

Blind spot and lane change collisions

The industry calls them no-zone crashes. Mirror adjustment, blind spot monitoring equipment on the unit, and whether the carrier trained the driver on lane change procedure all matter.

Rear-end and following too closely

Stopping distance for a loaded unit is a function of weight, grade, brake condition, and speed. Engine control module data usually shows whether the driver braked at all and when.

Tire failure and mechanical failure

Tread separation, brake failure, steering component failure, and lighting failure. The maintenance file, the driver vehicle inspection reports, and the annual inspection records under 49 C.F.R. Part 396 determine whether this was an unforeseeable failure or a deferred repair.

Cargo spills, shifting loads, and lost loads

Unsecured cargo that departs the trailer or shifts and destabilizes the unit. Liability may extend past the carrier to the shipper or the loading facility.

Hazardous materials releases

Fuel tankers, chemical loads, and placarded units carry higher minimum coverage and additional regulatory duties, including driver endorsement and routing requirements.

Delivery vans, box trucks, dump trucks, and buses

Vehicles with a gross vehicle weight rating over 10,000 pounds used in commerce are commercial motor vehicles under 49 C.F.R. 390.5. A sprinter van making residential deliveries in Aurora is not exempt from the regulations simply because it is not an eighteen wheeler.

What Causes Trucking Collisions, and What the Regulations Require

Naming the cause is only half the work. The value of a trucking case usually turns on tying the cause to a specific regulatory duty the carrier owed and breached.

Fatigue and hours of service violations

The federal hours of service rules in 49 C.F.R. Part 395 limit a property-carrying driver to 11 hours of driving after 10 consecutive hours off duty, cap the driving window at 14 consecutive hours after coming on duty, require a 30 minute interruption after 8 cumulative hours of driving, and impose 60 hour in 7 day and 70 hour in 8 day limits. Electronic logging devices made falsification harder but did not eliminate it. Cross-referencing the electronic log against fuel purchases, toll transactions, gate scans, cell site data, and dispatch messages regularly reveals off-log driving.

Speed, grade, and the failure to slow for conditions

Colorado’s careless driving statute, C.R.S. 42-4-1402, and reckless driving statute, C.R.S. 42-4-1401, apply to commercial drivers, and a driver who maintains posted highway speed on a wet Vail Pass descent has violated the basic speed rule regardless of the number on the sign.

Impairment

49 C.F.R. Part 382 governs controlled substance and alcohol testing for CDL holders, including pre-employment, random, reasonable suspicion, and post-accident testing. Part 382.303 requires post-accident testing under defined circumstances. A missed or delayed post-accident test is itself a serious problem for the carrier, and the FMCSA Drug and Alcohol Clearinghouse now records violations across employers.

Distraction

Federal rules prohibit hand-held mobile telephone use and texting by commercial drivers under 49 C.F.R. 392.80 and 392.82. Colorado’s own hands-free law adds a state layer. Phone records, in-cab camera footage, and telematics events establish the violation.

Improper loading and weight

The cargo securement standards in 49 C.F.R. Part 393, Subpart I set performance requirements for restraint systems, and federal bridge formula and state weight limits govern gross and axle weights. Overweight and improperly distributed loads change stopping distance and rollover threshold. Bills of lading, weight tickets, and loading records often implicate the shipper alongside the carrier.

Deferred maintenance

Part 396 requires systematic inspection, repair, and maintenance, driver vehicle inspection reports, and annual inspections. Brakes out of adjustment remain among the most common serious violations found at roadside inspection. The carrier’s inspection history in the FMCSA Safety Measurement System frequently shows a pattern that predates the crash.

Unqualified and negligently retained drivers

Part 391 requires a driver qualification file containing the employment application, the motor vehicle record, prior employer safety performance history, the road test, and the medical examiner’s certificate. When that file is thin, or when it documents a history the carrier hired past anyway, the claim shifts from a single driver error to a corporate decision.

Who Can Be Held Liable After a Colorado Truck Accident

The driver

Direct negligence for the conduct that caused the collision.

The motor carrier

A carrier is vicariously liable for the negligence of a driver acting within the scope of employment. It may also be directly liable for its own conduct, including negligent hiring, negligent training, negligent supervision, negligent retention, and negligent entrustment. Direct claims matter because they open the corporate file: safety policies, pressure on dispatch, prior complaints, and the carrier’s own violation history. Under the federal leasing regulations at 49 C.F.R. Part 376, a carrier that leases equipment with a driver generally cannot escape responsibility by labeling the driver an independent contractor.

The trailer owner and the equipment lessor

Ownership of the tractor and trailer are frequently separate from the operating authority. Each layer may carry its own coverage.

The freight broker and the shipper

A broker that selects a carrier with a known safety history may face a negligent selection claim, though carriers routinely assert preemption under the Federal Aviation Administration Authorization Act. A shipper or loading facility that loaded the trailer improperly, or that concealed the nature of the cargo, can be liable on ordinary negligence principles.

Maintenance contractors and parts manufacturers

Third-party shops that performed the brake work, and manufacturers of a defective component, can be defendants under negligence and product liability theories.

Government entities

When a public entity’s road design, signage, or its own vehicle contributed, the Colorado Governmental Immunity Act controls. Written notice of claim must be filed within 182 days of discovery of the injury under C.R.S. 24-10-109, and that deadline is a jurisdictional prerequisite. Missing it ends the claim against the entity no matter how strong the liability picture is.

Evidence in a Truck Case Disappears Fast

This is the practical reason to call a lawyer in the first week rather than after the medical treatment is finished. Federal regulations set minimum retention periods, and a carrier that destroys records on schedule after that period has not necessarily done anything wrong. Once a preservation demand is served, however, destruction becomes spoliation, and Colorado courts have remedies for it.

Engine control module data is worse. Depending on the module, crash event data may be overwritten by continued operation of the vehicle or lost when power is disconnected. Camera systems often hold footage on a rolling loop measured in days. Once the tractor is repaired and back in service, the opportunity to inspect it in its post-crash condition is gone.

What preservation looks like in practice

• A written spoliation and preservation demand served on the carrier, the driver, the insurer, and any known lessor, identifying each category of evidence by regulation.
• A demand to preserve the tractor and trailer in their post-crash condition, and to permit joint inspection and download before any repair.
• Retention of a reconstructionist and, where warranted, a heavy vehicle download technician.
• Requests to the Colorado State Patrol or the investigating agency for the crash report, scene photographs, body camera and dash camera footage, measurements, and any commercial vehicle inspection performed at the scene.
• Collection of the carrier’s public safety data from the FMCSA Safety Measurement System, licensing and insurance filings, and prior crash history.
• Where necessary, an early petition to the court to compel inspection and prevent alteration of the vehicle.

Colorado Law That Controls Your Truck Accident Claim

Deadlines

A minor’s claim is generally tolled until the age of eighteen, and the discovery rule can affect accrual where the injury or its cause was not immediately apparent. None of these exceptions should be relied on without an evaluation of the specific facts.

Comparative negligence and apportionment

Colorado follows modified comparative negligence under C.R.S. 13-21-111. A plaintiff whose negligence equals or exceeds fifty percent of the total recovers nothing. Below that threshold, the award is reduced by the plaintiff’s percentage. Defendants are liable on a pro rata basis under C.R.S. 13-21-111.5, and designated nonparties can absorb fault. This is exactly why carriers invest so heavily in the first 48 hours: shifting even a modest share of fault onto the injured driver, or onto a phantom vehicle, pays for itself many times over.

Damage caps, and the exception that matters

For civil actions filed on or after January 1, 2025, C.R.S. 13-21-102.5 caps noneconomic damages at $1,500,000, and caps noneconomic damages in a wrongful death action at $2,125,000. House Bill 24-1472 also eliminated the former mechanism for exceeding the cap on clear and convincing evidence and provided for inflation adjustment every two years beginning January 1, 2028.

Economic damages are not capped. Past and future medical expenses, lost earnings, and lost earning capacity are limited by proof, not by statute. Just as important in a catastrophic trucking case, Colorado treats physical impairment and disfigurement as a category separate from noneconomic loss, and those damages are not subject to the noneconomic cap. In a case involving amputation, spinal cord injury, severe burns, or permanent orthopedic loss of function, how the damages are pleaded and presented against that distinction can change the recoverable figure substantially.

Exemplary damages

Under C.R.S. 13-21-102, exemplary damages may not be claimed in the initial pleading. They may be added after the exchange of initial disclosures and the establishment of a prima facie case of fraud, malice, or willful and wanton conduct, and are generally limited to an amount equal to the actual damages, subject to the court’s authority to increase that figure up to three times actual damages in defined circumstances. Willful and wanton conduct is not a stretch in every case, but log falsification, knowing operation of a unit with defective brakes, or dispatch pressure that made a violation inevitable can support it.

Other Colorado rules that affect value

• Collateral source. C.R.S. 13-21-111.6 governs reduction for benefits from sources other than the defendant, with a contract exception that does substantial work in practice.
• Seat belt evidence. Under C.R.S. 42-4-237, failure to wear a safety belt is admissible only as it relates to mitigation of damages for pain and suffering, and it is not evidence of comparative negligence.
• Prejudgment interest. C.R.S. 13-21-101 allows interest on personal injury damages, calculated from the date the action accrued.
• Wrongful death recovery. C.R.S. 13-21-203 and the solatium alternative in C.R.S. 13-21-203.5 give the survivors a choice between proving noneconomic loss and electing a fixed statutory solatium amount. House Bill 24-1472 also expanded standing so that a sibling may bring a wrongful death action in defined circumstances.

Insurance Coverage in Colorado Trucking Cases

Finding the coverage is a distinct task from proving liability, and in a serious case it is often the task that determines what the family actually receives.

• The federal floor. 49 C.F.R. 387.9 sets a minimum of $750,000 in public liability coverage for most for-hire interstate carriers of general freight in vehicles over 10,000 pounds. That figure was set by the Motor Carrier Act of 1980 and has never been adjusted for inflation. Carriers hauling certain hazardous materials must carry $5,000,000, oil carriers $1,000,000, and lighter non-hazardous units $300,000.
• The MCS-90 endorsement. Attached to policies filed with the FMCSA, the endorsement obligates the insurer to pay a public liability judgment even where a policy exclusion would otherwise defeat coverage, subject to reimbursement from the insured. It is a judgment collection tool, not a substitute for coverage, and its scope is frequently litigated.
• Layered towers. Larger carriers commonly run a primary layer, one or more excess layers, and sometimes a self-insured retention or a captive. Identifying every layer, and the notice obligations that attach to each, is part of the early investigation.
• Your own coverage. Underinsured motorist coverage under C.R.S. 10-4-609, medical payments coverage, and health insurance all interact with the third-party recovery. Where an insurer unreasonably delays or denies payment of your own benefits, C.R.S. 10-3-1115 and 10-3-1116 provide for recovery of two times the covered benefit plus reasonable attorney fees and costs.

Damages Available in a Colorado Truck Accident Claim

• Past medical expenses, including emergency transport, surgical and hospital care, and rehabilitation.
• Future medical care, assistive equipment, home modification, and attendant care, supported by a life care plan where the injury is permanent.
• Past lost wages and benefits.
• Loss of future earning capacity, valued by a vocational expert and an economist.
• Physical impairment and disfigurement, which Colorado treats separately from the noneconomic cap.
• Pain, suffering, inconvenience, emotional distress, and loss of enjoyment of life, subject to the statutory cap.
• Property damage and diminished value.
• In a wrongful death action, funeral and burial expenses, the survivors’ lost financial support, and noneconomic loss or the statutory solatium.
• Exemplary damages where the statutory standard is met.

How Much Is a Colorado Truck Accident Case Worth?

No lawyer can value your case from a web page, and any site that offers a settlement calculator or a range for “the average truck accident settlement” is selling something. Value is a function of specific, provable facts. These are the variables that move it.

• Available coverage. A case worth more than the coverage stack is worth the coverage stack, absent an excess judgment or a bad faith claim. Identifying every layer is therefore a damages issue, not just a procedural one.
• Clarity of liability. A documented regulatory violation tied to the mechanism of the crash is worth substantially more than a disputed lane change.
• Severity and permanency. Whether the injury requires future surgery, permanent restrictions, or attendant care, and whether an objective diagnostic supports it.
• Lost earning capacity. Age, occupation, and the gap between pre-injury and post-injury capacity, valued by a vocational expert and an economist.
• Comparative fault exposure. Every percentage point assigned to the plaintiff reduces the recovery by that percentage.
• Statutory caps. The noneconomic cap applies, while economic damages and physical impairment and disfigurement are outside it.
• Liens and subrogation. Health plan, ERISA, Medicare, Medicaid, and workers’ compensation interests determine net recovery, and negotiating them down is part of the case.
• Venue and the identity of the defendant. A national carrier with a documented violation history in front of a Denver County jury is a different valuation problem than an owner-operator with minimum limits.

Prior results do not guarantee or predict the outcome of any other case. The only reliable way to learn what your claim is worth is an evaluation of your records, your coverage, and the carrier’s file.

Common Injuries in Semi-Truck Collisions

The injury pattern in commercial vehicle cases skews severe, which is why life care planning and future damages proof matter more than in a typical car case.

• Traumatic brain injury, including injuries that do not appear on initial imaging.
• Spinal cord injury, paraplegia, and quadriplegia.
• Cervical and lumbar disc herniation requiring fusion or artificial disc replacement.
• Complex and comminuted fractures, pelvic fractures, and open fractures requiring hardware.
• Traumatic amputation and crush injury.
• Internal organ injury and internal bleeding.
• Thermal and chemical burns, including burns from post-collision fire or a hazardous materials release.
• Facial trauma, dental injury, and vision loss.
• Post-traumatic stress and other psychological injury arising from the collision.
• Wrongful death.

What to Do After a Truck Accident in Colorado

1. Get medical attention and follow through with it. Gaps in treatment are the first thing a defense adjuster looks for, and adrenaline masks serious injury at the scene.
2. Make sure law enforcement responds and a report is generated. Ask whether a commercial vehicle inspection was performed on the unit.
3. Photograph everything you safely can. The tractor and trailer placards, the U.S. DOT number, the license plates, the cargo, the resting positions, the roadway, and your own injuries.
4. Identify witnesses. Names and phone numbers. Witnesses in freight corridors are frequently out-of-state and become unreachable within weeks.
5. Do not give a recorded statement to the carrier’s insurer. The rapid response adjuster who calls within a day is not gathering information to pay you.
6. Do not sign a medical authorization or a release. A broad authorization hands the defense your entire medical history, and a release ends the claim.
7. Be careful with a fast settlement offer. An early check almost always precedes the point at which the full extent of injury is known, and accepting it extinguishes the claim.
8. Preserve your own vehicle and its data before the insurer salvages it.
9. Call a lawyer while the evidence still exists. The retention periods above run from the date of the crash, not from the date you decide to pursue a claim.

How Mandelaris Law Handles a Trucking Case

As a Denver truck accident lawyer, Steven Mandelaris has been licensed to practice law in Colorado since 2006, has served as Associate General Counsel for the Fraternal Order of Police, and has recovered more than $25 million for clients across more than 170+ litigated cases. Every case is different, and prior results do not guarantee or predict the outcome of any other matter.

In a commercial motor vehicle case, the work generally proceeds in this sequence.

1. Immediate preservation. Spoliation demands to every identified party, a vehicle inspection and download demand, and requests to the investigating agency.
2. Independent investigation. Scene documentation, witness interviews, retention of a reconstructionist where the mechanism is contested, and collection of the carrier’s regulatory and inspection history.
3. Coverage identification. Locating the operating authority, the filings, the primary and excess layers, and any lease arrangement that adds a defendant.
4. Medical development. Coordinating treatment documentation, addressing liens and subrogation, and building future care proof through treating physicians and, where needed, a life care planner.
5. Demand and negotiation. A documented demand that ties each regulatory violation to the mechanism of injury and to the damages proof.
6. Litigation. Filing in the appropriate Colorado district court or in the United States District Court for the District of Colorado, corporate discovery, depositions of the driver, the safety director, and the dispatcher, and trial preparation from the outset rather than as a fallback.

Attorney Fees

Trucking cases are handled on a contingency fee. The consultation is free, there is no fee unless there is a recovery, and case costs are advanced by the firm. The fee agreement states the percentage and the treatment of costs in writing before any work begins.

Areas Served

As a Denver truck accident lawyer, Mandelaris Law, LLC represents injured people throughout Colorado from its office at 501 S. Cherry Street, Suite 1100, Denver, Colorado 80246, including Denver, Aurora, Lakewood, Arvada, Westminster, Thornton, Centennial, Littleton, Englewood, Greenwood Village, Commerce City, Brighton, Broomfield, Wheat Ridge, Golden, Parker, Castle Rock, Highlands Ranch, Boulder, Longmont, Loveland, Fort Collins, Greeley, Colorado Springs, Pueblo, Grand Junction, and the mountain communities along the I-70 corridor. Cases are filed in the district courts of Denver, Arapahoe, Adams, Jefferson, Douglas, Broomfield, and Boulder Counties, and in the United States District Court for the District of Colorado.

This page is provided for general information about Colorado law and does not constitute legal advice. Reading it does not create an attorney-client relationship. Statutes, regulations, and dollar figures cited here are subject to change and are applied differently depending on the facts of a particular case. Prior results do not guarantee a similar outcome.