Who Is at Fault if a Bicyclist Gets Hit by a Car Door in Colorado?

 Posted on October 05, 2025 in Car Accident

Bicyclists share the road with cars every day in Colorado. One of the most common and dangerous risks riders face is being "doored." The injuries from these crashes can be serious, resulting in medical bills, lost wages, and other damages. Filing a bike accident claim is often the best way to cover the expenses, and it means identifying who is at fault. At Hoggatt Law Office, P.C., our Larimer County, CO bicycle accident lawyer will investigate your case to gather the evidence you need to collect compensation.

What Is a Dooring Accident?

A dooring accident occurs when someone opens a vehicle door without checking for oncoming traffic, striking a bicyclist. The sudden impact can cause a cyclist to hit the door or swerve into traffic. The results can be broken bones, head injuries, or worse. Unlike other accidents, these crashes typically happen at low speeds. However, they can still cause devastating harm because bicyclists have little protection.

Colorado Laws on Opening Car Doors Near Bicyclists

Colorado law is clear that drivers and passengers must take care when opening their doors. Under C.R.S. § 42-4-1207, no one may open a car door unless it is reasonably safe to do so and will not interfere with traffic. This law is designed to protect cyclists and other road users from exactly these types of accidents.

When Is the Bicyclist at Fault for a Dooring Accident in Colorado?

While drivers and passengers are usually at fault for dooring accidents, there are situations where a bicyclist may share responsibility. For example, if a rider is weaving between cars, riding against traffic, or ignoring traffic control devices, they could be at least partially liable for damages.

If both parties are at fault, comparative negligence rules may apply. Colorado follows modified comparative negligence rules. This means that you cannot be more at fault than the other party. Being more than 50 percent liable makes you ineligible to collect damages. However, if you are less than 50 percent at fault, you will collect the total value of your damages minus your percentage of fault. For example, if you are found 20 percent at fault, your available damages would be reduced by 20 percent.

What Steps Should I Take After a Dooring Accident in Colorado?

If you are involved in a dooring accident, what you do in the aftermath can impact your legal claim. The proper steps to take include:

• Call the police and make sure a report is filed.

• Get medical attention right away, even if you feel okay at first.

• Take photos of the scene, including the car, the door, your bike, and any visible injuries.

• Collect witness information and the driver’s insurance details.

• Do not give statements to the insurance company before speaking with a lawyer.

Schedule a Free Consultation With a Fort Collins, CO Bicycle Accident Attorney

Dooring accidents are a common cause of bicycle injuries. If you were involved in a dooring accident, you need a legal representative who understands the laws that apply to these cases. At Hoggatt Law Office, P.C., we are proud to offer representation backed by proven experience. Attorney Hoggatt is an active member of the Colorado Trial Lawyers Association, showing his dedication to protecting injured individuals across the state.

Call 970-225-2190 today to schedule a free consultation with an experienced Larimer County, CO bicycle accident lawyer you can trust. We will listen to your story, explain your options, and fight for fair compensation. Se Habla Español.