If you got hit by a car door while riding a bike or walking past a parked car, you were probably moving well under 15 miles an hour, less than a second from impact, with nowhere to go. That is what makes dooring different from most car accidents. It happens close to the curb, at low speed, and it is almost always preventable by the person inside the car.
"Dooring" is the term for a crash caused when someone inside a parked or stopped vehicle opens a door into the path of an oncoming cyclist, pedestrian, skater, or scooter rider. It is one of the most common ways cyclists get hurt in cities, and it carries its own body of law, separate from the rules that govern car-on-car collisions. This guide covers what dooring is, who is legally responsible, how the rules shift from state to state, and how insurance actually pays out when a door, not a bumper, causes the injury.
What counts as a dooring accident
A dooring crash requires three things: a parked or stopped vehicle, a door opened into a lane of travel, and someone already in that lane who cannot stop in time. The most common victim is a cyclist riding in a bike lane or along the right side of the road, but the same fact pattern catches pedestrians stepping around a parked car and, increasingly, delivery riders on e-bikes.
Most doorings involve the driver's door on the traffic side of a parallel-parked car. But a growing share involve back-seat passengers, especially in rideshare pickups and drop-offs, where someone in an Uber or Lyft swings a door open without checking a mirror first. The law generally treats both scenarios the same way: it does not matter whether the person who opened the door was driving the car or just riding in it.
Bicyclist deaths have been rising for over a decade. The Insurance Institute for Highway Safety counted 1,075 bicyclist deaths in the most recent year of national data, up 73% from the modern low point in 2010, and 81% of those deaths happened in urban areas, exactly where street parking and dooring risk are concentrated.1 Nearly a quarter of bicyclist deaths occur between 6 p.m. and 9 p.m., when low light makes an opening door even harder to spot in time.1
Why door strikes are so dangerous
A car door swings open in a fraction of a second, and a cyclist moving at 10 to 15 miles an hour has almost no time to brake or swerve. The initial impact against the door often throws the rider over the handlebars or sideways into the adjacent traffic lane, which is where the second, often worse, collision happens: a following car or truck that never saw the rider go down.
That two-part sequence is why dooring injuries skew toward head trauma, shoulder fractures, and wrist injuries from bracing for a fall, on top of whatever a following vehicle adds. It is also why documenting the crash carefully matters so much for a claim: an insurer will often try to isolate the "door contact" from the "vehicle contact" and treat them as two separate, smaller events instead of one continuous crash.
Who is legally at fault
In nearly every state, the legal default puts fault on the person who opened the door, not the person who got hit. That rule traces back to the 1956 Uniform Vehicle Code, a model law drafted for states to adopt, which set the template still used today: no one may open a vehicle door into moving traffic unless it is reasonably safe to do so, and no one may leave a door open into traffic longer than needed to load or unload.2
States adopted that language with only small variations. California's version reads almost word for word: "No person shall open the door of a vehicle on the side available to moving traffic unless it is reasonably safe to do so and can be done without interfering with the movement of such traffic."3 Illinois's dooring statute, 625 ILCS 5/11-1407, uses nearly identical wording and applies to "any person," meaning a passenger can be held liable just as easily as a driver.4 New York's Vehicle and Traffic Law section 1214 imposes the same duty: a door may not be opened "unless and until it is reasonably safe to do so, and can be done without interfering with the movement of other traffic."5
None of these statutes require proof that the door-opener saw the cyclist coming. The duty is to check first, and failing to check is itself the violation. That makes dooring cases, in the rare instance they go to court, comparatively straightforward on the liability question. The harder fights tend to be about the extent of the injury and how much of the crash a defense lawyer can pin on the rider.
How the rules vary from state to state
Every state has some version of a door-opening statute, but a few things about dooring genuinely differ depending on where the crash happens, and this is where you should check your state's specific page rather than assume the national picture applies exactly.
The clearest example is data. Illinois is the only state that tracks dooring as its own separate crash category in official crash reports, which is why the best hard numbers anywhere in the country come out of Chicago. State transportation data showed 127 reported doorings in Chicago in 2010, or about 7.25% of all reported bike crashes that year, and 344 doorings in 2011, close to 20% of all reported bike crashes, or roughly one in five.6 By 2015, reported doorings had climbed to 302, a 50% jump from 202 the year before.7 No other state publishes anything close to that level of detail, so a victim outside Illinois is relying on police crash narratives rather than a dedicated dooring statistic.
Fault-sharing rules also vary sharply. Most states use some form of comparative negligence, which reduces a victim's payout by their percentage of fault rather than wiping it out. But Alabama, Maryland, North Carolina, and Virginia still use pure contributory negligence, an older rule under which even 1% of fault on the cyclist's part can bar recovery entirely. Washington, D.C. used to follow that same harsh rule for everyone, but it carved out a specific exception for pedestrians and cyclists: under D.C. Code section 50-2204.52, a cyclist's or pedestrian's own negligence does not bar their claim against a driver unless that negligence outweighs the combined fault of all the defendants.8 It is a rare example of a jurisdiction rewriting its fault rules specifically because vulnerable road users kept losing dooring and similar claims on technicalities.
Filing deadlines differ by state as well, and they are not something to guess at. Depending on the state, you may have anywhere from one to several years to file a lawsuit after a dooring crash, and claims against a government entity, say if the vehicle was a city bus or municipal fleet car, often carry a much shorter notice deadline, sometimes a matter of months. Check your state's page for the exact number rather than relying on a general rule.
When a cyclist gets blamed for riding too close
Because the door-opener carries the statutory duty, insurers rarely deny that the door caused the crash. Instead, the more common defense tactic is arguing the cyclist was riding recklessly close to parked cars, sometimes called riding in the "door zone."
This argument runs into a problem: most state bicycle statutes explicitly protect a cyclist's right to move away from parked cars. California's law requiring cyclists to ride "as close as practicable to the right-hand curb" includes a direct exception for exactly this situation, letting a rider move left "when reasonably necessary to avoid conditions that make it unsafe to continue along the right-hand curb," including parked vehicles.9 In other words, the same body of law that tells cyclists to stay right also tells them they don't have to hug parked cars where a door could open. An insurer arguing a cyclist should have ridden closer to a line of parked cars is, in most states, arguing against what the statute itself says.
That does not mean comparative fault never applies. Riding without lights at night, riding against traffic, or riding on a sidewalk where it is prohibited can all still reduce a payout in a comparative negligence state, or eliminate it in a contributory negligence one. But simply choosing a safe distance from parked cars is not, on its own, evidence of fault.
Whose insurance actually pays
This is the part most people get wrong: the claim usually is not filed against the door-opener personally. It is filed against the door-opener's auto insurance, even when a passenger, not the vehicle's owner, opened the door.
Auto liability policies cover injuries that arise out of the use of the insured vehicle, and courts have long treated getting in and out of a car, including opening its doors, as part of using it. In Texas Farm Bureau Mutual Insurance Co. v. Sturrock, the Texas Supreme Court held that an injury tied to the process of exiting a vehicle counted as arising from the vehicle's use, applying the general test that a vehicle must be more than the mere situs of an injury and that a close causal link, in time or location, has to exist between the vehicle and what happened.10 That same reasoning is why door-related injury claims, including dooring claims against cyclists, typically get paid out of the vehicle's own liability policy rather than treated as some kind of separate passenger incident outside auto coverage.11
That has a few practical consequences. If the door-opener was a passenger with no insurance of their own, the claim still generally goes against the policy covering the car they were riding in, subject to that state's permissive-use rules. If that policy is too thin to cover the injury, or the door-opener fled without identifying the vehicle, the victim's own underinsured or uninsured motorist coverage can often step in, along with any MedPay or PIP coverage on the victim's own policy for immediate medical bills regardless of fault. For rideshare pickups and drop-offs specifically, which insurance applies, the rideshare company's commercial policy or the driver's personal policy, can depend on the exact phase of the trip when the door opened, which is a detail worth sorting out with an attorney rather than assuming.
Why bike lane design and the Dutch Reach matter
Because dooring is baked into how American streets are built, with bike lanes running directly alongside parallel parking, prevention efforts have focused as much on street design and driver habit as on liability law.
The National Association of City Transportation Officials recommends that parking-protected bike lanes include a dedicated buffer of at least 3 feet between the parking lane and the bike lane, specifically to give a door room to swing without reaching a cyclist. Its own design guide puts door-zone crashes at somewhere between 12% and 27% of all bicycle-motor vehicle collisions in mixed traffic.12 Cities that have added that buffer have seen far fewer cyclists riding directly in the door's swing path.
On the driver side, the fix with the most traction is the Dutch Reach, a habit of opening a car door with the hand farther from the door, the right hand for a driver, the left for a passenger, which forces your body to twist and look over your shoulder before the door swings out. Illinois became the first state to write it into law, with Public Act 100-0770 requiring the Secretary of State to add the Dutch Reach to the official Rules of the Road driver's manual and to add bicycle safety questions to the driver's license exam.13 Massachusetts got there first administratively, adding the technique to its driver's manual in 2017 without new legislation.14 A handful of other states have since added similar language to their own manuals, though it is still far from universal, so do not assume your state's exam covers it.
What to do right after a dooring crash
The instinct after getting doored is often to shake it off, especially at low speed. Don't. Adrenaline masks concussion symptoms and soft-tissue injuries for hours, and a crash report filed on scene is far more persuasive to an insurer than a version pieced together days later.
- Call the police and get a report filed, even if the damage looks minor. In states like Illinois where dooring is tracked separately, an officer needs to code it correctly for it to count, and for you, that report is your clearest evidence of who opened the door and when.
- Get the door-opener's name, insurance information, and the vehicle owner's information if they are different people. Both may matter later.
- Photograph the door's position, the vehicle, your bike or point of impact, and any road markings or bike lane striping before anything gets moved.
- See a doctor within a day or two even if you feel fine. Head impacts and wrist fractures from a dooring fall are common injuries that do not always announce themselves immediately.
- Keep the bike, helmet, and clothing you were wearing. Damage to a helmet or frame is physical evidence of impact force that photographs alone don't fully capture.
Getting help after a dooring accident
Because fault usually rests clearly on the door-opener, dooring claims sound simple on paper. In practice, the fights are almost always over how much the injury is worth, whether the cyclist's positioning gets second-guessed, and which of several possible policies actually pays: the driver's, a passenger's, a rideshare company's, or your own UM/UIM. An attorney who handles bike injury cases regularly will know which of those angles applies in your state before an adjuster tries to close the file cheap. You can find one through the legal directory.
This article provides general information, not legal advice.
Sources
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Insurance Institute for Highway Safety, "Fatality Facts 2024: Bicyclists," https://www.iihs.org/research-areas/fatality-statistics/detail/bicyclists
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I Am Traffic, "Millennium Edition of the Uniform Vehicle Code" (UVC section 11-1105, Opening and Closing Vehicle Doors), https://iamtraffic.org/wp-content/uploads/2013/01/UVC2000.pdf
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California Vehicle Code section 22517, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=22517&lawCode=VEH
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Illinois Vehicle Code, 625 ILCS 5/11-1407, https://www.ilga.gov/legislation/ilcs/documents/062500050K11-1407.htm
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New York Vehicle and Traffic Law section 1214, https://www.nysenate.gov/legislation/laws/VAT/1214
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WNYC, "Data From Only State that Tracks Dooring Show Its Big Problem," https://www.wnyc.org/story/285015-data-from-only-state-that-tracks-dooring-show-its-big-problem/
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WTTW News, "Chicago 'Dooring' Reports Saw Steep Increase in 2015, Data Shows," https://news.wttw.com/2017/04/21/chicago-dooring-reports-saw-steep-increase-2015-data-shows
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District of Columbia Code section 50-2204.52, Contributory Negligence Limitation, https://code.dccouncil.gov/us/dc/council/code/sections/50-2204.52
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California Vehicle Code section 21202, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=21202&lawCode=VEH
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Texas Farm Bureau Mutual Insurance Co. v. Sturrock, 146 S.W.3d 123 (Tex. 2004), https://www.courtlistener.com/opinion/2833272/texas-farm-bureau-mutual-insurance-company-v-jeff-/
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International Risk Management Institute, "'No-Fault' Coverage Insures Injuries Arising Out of the Use of a Vehicle," https://www.irmi.com/articles/expert-commentary/no-fault-coverage-insures-injuries-arising-out-of-the-use-of-a-vehicle
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National Association of City Transportation Officials, Urban Bikeway Design Guide, Protected Bike Lanes, https://nacto.org/publication/urban-bikeway-design-guide/designing-bikeways-for-all-ages-and-abilities/protected-bike-lanes/separating-protected-bike-lanes/
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Illinois Public Act 100-0770, https://www.ilga.gov/legislation/publicacts/fulltext.asp?Name=100-0770
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Governing, "What's the 'Dutch Reach'? 2 U.S. States Adopt It to Save Cyclists' Lives," https://www.governing.com/topics/transportation-infrastructure/gov-dutch-reach-state-law-illinois-massachusetts.html