Breaking News: Seat Belt Safety Laws for Dogs

What every dog owner needs to know about the physics of unrestrained pets in vehicles, the evolving patchwork of state laws, and how to choose a restraint that actually protects your dog in a crash.

At-a-glance guide

What actually happens to an unrestrained dog in a car crash?

The physics of an unrestrained dog in a vehicle collision is brutal and unforgiving. At just 30 miles per hour, a 60-pound dog becomes a projectile with approximately 2,700 pounds of force — equivalent to a grand piano hitting the back of the front seat, the windshield, or another passenger. This calculation, based on the formula Force = Mass × Acceleration, means that even a low-speed collision can turn a beloved pet into a lethal hazard for every human and animal in the vehicle (Center for Pet Safety, 2023). In a 25-mph crash, an unrestrained dog can be thrown forward with a force equal to 40 times its body weight.

Beyond the projectile risk, unrestrained dogs face three additional dangers in a crash. First, they can be ejected from the vehicle through a window or door that opens on impact — a scenario with a near-zero survival rate. Second, they can become trapped under brake pedals or wedged in footwells, complicating rescue efforts and potentially preventing first responders from reaching human occupants. Third, a frightened, injured dog may bolt from the vehicle after a crash and be struck by passing traffic or become lost in an unfamiliar area, sometimes miles from the accident scene (American Automobile Association, 2022).

Quick decision guide

Which states have laws requiring dogs to be restrained in vehicles?

As of 2025, there is no federal law in the United States requiring dogs to be restrained in vehicles, and the state-level legal landscape is a patchwork. Only a handful of states have passed laws that specifically address pet restraint in moving vehicles. Rhode Island, New Jersey, and Hawaii have enacted statutes that require dogs to be properly restrained — via harness, crate, or barrier — while riding in a vehicle. Violations in these states can result in fines ranging from $50 to $250 for a first offense, and in some cases, unrestrained pets can be cited under broader animal cruelty or distracted driving statutes (Animal Legal Defense Fund, 2024).

Several additional states have addressed the issue indirectly. In Connecticut, Maine, and New Hampshire, unrestrained dogs in vehicles can be cited under distracted driving laws if the dog's behavior is deemed to interfere with the driver's ability to operate the vehicle safely. In Arizona, a dog riding in the bed of an unenclosed pickup truck must be cross-tethered or otherwise restrained to prevent ejection. California's Vehicle Code does not specifically mandate dog restraints, but law enforcement officers can cite drivers under general unsafe driving provisions if an unrestrained dog creates a hazard (Governors Highway Safety Association, 2024).

What types of dog car restraints actually work — and which ones fail crash testing?

Not all dog car restraints are created equal, and the difference between a product that looks safe and one that actually protects a dog in a crash can be measured in catastrophic injury or death. The Center for Pet Safety (CPS), an independent nonprofit organization, conducts standardized crash testing of pet restraints using the same protocols and equipment used for child safety seats. Their testing has revealed that many popular products — including harnesses sold with "safety" or "crash-tested" labeling — fail catastrophically under crash conditions, with stitching tearing, buckles breaking, and the test-dummy dog being launched forward (Center for Pet Safety, 2023).

The CPS certification is currently the most rigorous independent standard for dog car restraints. To earn CPS certification, a harness must keep the test-dummy dog on the seat during a frontal crash test, prevent the dog from becoming a projectile, and maintain structural integrity without stitching, buckle, or hardware failure. As of 2025, only a small number of harnesses have earned this certification, including models from Sleepypod and Kurgo. Owners should look specifically for the CPS certification seal — not just marketing language like "crash-tested" or "safety harness," which has no regulatory definition and can be applied to products that have never been independently tested.

Crash-tested crates and carriers represent another option, particularly for smaller dogs. The Gunner G1 kennel and the Variocage are among the few crates that have undergone independent crash testing and demonstrated the ability to contain a dog during a collision. A properly secured crate — strapped down with ratchet straps to the vehicle's cargo tie-downs — provides both containment and protection. Extension tethers, ziplines, and seat-belt clips that attach to a dog's regular walking harness are not adequate restraints and should never be relied upon in a crash scenario. A walking harness is designed for leash walks, not for withstanding the forces of a collision.

How do you choose and properly fit a crash-tested dog car harness?

Choosing a crash-tested harness begins with verifying independent certification. Look for the Center for Pet Safety certification seal on the product packaging or the manufacturer's website. If a product claims to be "crash-tested" but does not carry CPS certification, ask the manufacturer for the test report — specifically, whether the testing was conducted by an independent laboratory using the Federal Motor Vehicle Safety Standard (FMVSS) 213 protocol for child restraint systems, which is the standard CPS uses. Vague claims without documentation should be treated as marketing, not safety assurance (Center for Pet Safety, 2023).

Proper fit is as important as the harness itself. A harness that is too loose will allow the dog to slip out during a crash; a harness that is too tight can cause soft-tissue injury or restrict breathing. The harness should be snug enough that you can fit no more than two fingers between the strap and the dog's body at any point. The chest plate should sit squarely on the sternum, not ride up onto the throat, and the attachment point for the seat-belt tether should be at the dog's back, not the chest. After fitting, have the dog walk, sit, and lie down in the harness to ensure it does not shift or chafe.

The harness must be used with a vehicle seat belt threaded through the designated loop or attachment point — never clipped to a leash or a non-load-rated anchor. The dog should ride in the back seat, not the front, because front-seat airbags deploy with enough force to kill or severely injure a dog, even one in a harness. The back seat also positions the dog farther from the dashboard and windshield, reducing the risk of impact injury. For dogs that are anxious or restless in the car, gradual desensitization — short, positive trips to fun destinations, paired with high-value treats — should be completed before relying on the harness for longer journeys.

What common mistakes do owners make with dog car restraints?

The most common and dangerous mistake is using a walking harness as a car restraint. Walking harnesses are not designed or tested to withstand crash forces, and in a collision, the stitching, buckles, or attachment points can fail instantly, leaving the dog unrestrained at the moment of maximum danger. A 2021 CPS study found that every walking harness tested failed within the first second of a simulated 30-mph crash. The harness must be specifically designed and independently certified for vehicle use — there is no safe shortcut (Center for Pet Safety, 2023).

Allowing the dog to ride in the front seat — even in a harness — is another critical error. Passenger-side airbags deploy at speeds of up to 200 miles per hour and with enough force to cause fatal thoracic or cranial trauma to a dog. The back seat is the only safe position for a dog in a moving vehicle. Similarly, allowing a dog to ride with its head out the window — restrained or not — exposes the eyes, ears, and nose to airborne debris, insects, and road grit that can cause corneal abrasions, ear injuries, and respiratory irritation. A dog can also be ejected through an open window during a sudden swerve or collision, even at low speeds.

Failing to secure the crate or carrier is a mistake that negates the protection the crate is designed to provide. An unsecured crate becomes a projectile itself in a crash, potentially injuring the dog inside and other occupants. Crates should be secured with ratchet straps to the vehicle's cargo tie-downs, and the straps should be checked for tightness before every trip. Finally, leaving a dog unattended in a parked car — even with windows cracked — can be fatal within minutes on a warm day. The temperature inside a parked car can rise by 20 degrees Fahrenheit in just 10 minutes, and dogs can suffer heatstroke at internal body temperatures above 106°F (AVMA, 2023).

What should you do immediately after a car accident with your dog in the vehicle?

The moments after a car accident are chaotic and frightening, and having a plan for your dog can prevent a bad situation from becoming worse. First, do not immediately release your dog from its restraint. An injured, frightened dog may bolt, bite, or hide, and a dog running loose on a highway creates a secondary hazard for everyone. Keep the dog restrained until you have assessed the situation, the vehicle has come to a complete stop in a safe location, and you have a secure hold on the dog's leash or carrier (American Veterinary Medical Association, 2023).

Even if your dog appears uninjured, internal injuries — including pulmonary contusions, diaphragmatic hernias, and internal bleeding — may not be immediately visible. The force of a collision can cause organs to tear or bruise without breaking the skin, and dogs are adept at masking pain. Any dog that has been in a vehicle collision should be examined by a veterinarian as soon as possible, ideally within a few hours. If your regular veterinarian is unavailable, go to the nearest emergency veterinary hospital. Bring the dog's medical records if possible, and inform the veterinarian of the approximate speed and direction of the collision (Merck Veterinary Manual, 2024).

Keep a pet first-aid kit in your vehicle alongside your human first-aid kit. At minimum, it should include a muzzle (injured dogs may bite even their owners), gauze pads, self-adhering bandage wrap, saline solution for flushing wounds or eyes, a slip lead, and the phone number and address of the nearest 24-hour emergency veterinary hospital programmed into your phone. A sticker on your vehicle window indicating the number and type of pets inside can help first responders account for your animals if you are incapacitated. These small preparations take minutes and can save your dog's life.

References

1. American Automobile Association (AAA). (2022). Pets in vehicles: Distraction and safety risks. AAA Foundation for Traffic Safety.
2. American Veterinary Medical Association (AVMA). (2023). Pets in vehicles: Heatstroke and travel safety. https://www.avma.org
3. Animal Legal Defense Fund. (2024). State laws governing pet restraint in vehicles. https://aldf.org
4. Center for Pet Safety (CPS). (2023). Crash test protocols and certified products. https://www.centerforpetsafety.org
5. Governors Highway Safety Association (GHSA). (2024). Distracted driving laws by state. https://www.ghsa.org
6. Merck Veterinary Manual. (2024). Emergency medicine: Trauma and transport. Merck & Co.