How to Safely Restrain Your Dog in the Car (US Laws by State)

Most dog owners know they should keep their dog secured in the car. Far fewer actually do it — and even fewer know that in some US states, traveling with an unrestrained dog is not just dangerous, it is illegal.

This guide covers the current legal landscape across the US, what the research says about safe restraint methods, and what equipment actually meets the requirements.

Do US States Have Laws About Dogs in Cars?

Yes — though the specific laws vary significantly by state. Most fall into one of three categories: distracted driving laws, animal cruelty statutes that include transport conditions, and specific pet restraint laws.

States with Specific Dog Restraint or Transport Laws

New Jersey has one of the strictest laws in the country. Under N.J.A.C. 13:62-1.1, transporting an animal in a cruel or inhumane manner — which can include an unrestrained animal in an open truck bed or loose in a vehicle — is a violation. Fines can reach $1,000.

Hawaii prohibits dogs riding in a vehicle’s cargo area or on the driver’s lap. A loose dog that distracts the driver can result in a distracted driving citation.

Connecticut allows police to fine drivers transporting animals in a manner that endangers them or obstructs the driver’s view or operation.

Oregon and Maine have distracted driving laws that have been used to cite drivers with unrestrained dogs interfering with vehicle operation.

California, Arizona, Nevada, New Hampshire and many other states address animal cruelty in transport without specific seatbelt requirements, but unrestrained dogs riding in open truck beds are often cited under existing statutes.

Open Truck Bed Laws

This is where enforcement is most consistent across the country. Transporting a dog in an open truck bed is illegal or restricted in at least nine states: California, Connecticut, Maine, Massachusetts, Minnesota, New Hampshire, New Jersey, Oregon, and Rhode Island. Penalties vary from small fines to misdemeanor animal cruelty charges.

Even in states without explicit bans, dogs that fall from open truck beds are a documented source of accidents and lawsuits. The practice has become increasingly difficult to defend legally regardless of jurisdiction.

Why Legal Compliance Is the Starting Point, Not the Goal

The legal standards currently in place in most US states set a very low bar. Keeping your dog out of the front seat and out of an open truck bed satisfies the law in most jurisdictions — but it does not make your dog safe in a crash.

The research on this is clear. In a 30 mph collision, a 60-pound dog generates approximately 1,200 to 1,500 pounds of force as a projectile. An unrestrained dog in the back seat will travel forward at that force, potentially injuring or killing passengers and itself. No state law currently mandates crash-tested restraints — but the physics apply regardless of legislation.

What Actually Works: Crash-Tested vs Non-Crash-Tested Restraints

Not all restraints are equal. The Center for Pet Safety (CPS) conducted landmark crash testing on popular dog harnesses and found that the majority failed — some spectacularly — at 30 mph. The dog would slip out, the hardware would break, or the harness itself would collapse.

As of 2024, only a handful of harnesses have passed third-party crash testing to the standard used for human child seats (FMVSS 213). The key features of a passing harness are:

• Wide padded chest plate distributing force across the sternum and ribcage
• Multiple attachment points to prevent rotation
• Hardware rated for dynamic load, not static weight
• Proper fit — too loose and the dog slides out; too tight and it compresses the airway

The tether connecting the harness to the seatbelt anchor also matters. A long tether allows the dog to build momentum before the tether catches — increasing the impact force significantly. Short tethers (under 12 inches) with limited stretch perform best in crash testing.

The Three Legal and Safe Options

1. Seatbelt Harness + Short Tether

A crash-tested harness connected to a short tether that loops through the seatbelt latch or anchors to a seatbelt receiver. This is the most practical option for daily use. The dog can sit, stand, and lie down with limited movement, but cannot become a projectile in a crash. Our adjustable dog seat belt tether is designed to work with any standard harness.

Important: Never attach a tether to a dog collar. A sudden stop with collar attachment can cause neck injury or death. Harness only.

2. Crash-Tested Crate Secured to the Vehicle

A hard-sided crate strapped down with load anchors provides full containment. The dog cannot become a projectile because the crate itself is fixed to the vehicle. The crate must be rated for crash loads — soft-sided crates and decorative kennels provide almost no protection. Best for large SUVs with cargo areas and dogs who are crate-trained.

3. Rear Seat Barrier with Harness

A rear seat barrier prevents the dog from entering the front seat but does not restrain the dog itself. Used alone, a barrier does not protect the dog in a crash — it protects the driver from distraction. Combined with a harness, it creates a two-layer restraint system.

What Does NOT Work

• Collar + tether: Fatal in any significant crash. Collar attachment is uniformly rejected by every safety organization and crash test program.
• Lap or front seat riding: An airbag deploying into a small dog or child at 200 mph is catastrophic. Dogs do not belong in the front seat.
• Pet booster seats without harness integration: These provide comfort and visibility but minimal crash protection unless the dog is also harnessed.
• Open truck beds: Illegal in multiple states and responsible for thousands of dog injuries annually. Wind, debris, sudden braking, and falls all cause serious harm.

State-by-State Quick Reference

Laws change, and this list is not legal advice. Verify current laws in your state through your state’s DMV or legislative database.

• New Jersey: Animal transport laws apply; fines up to $1,000
• Hawaii: Prohibits dogs in cargo area or driver’s lap
• Connecticut: Citations possible for animals endangering vehicle operation
• California: Open truck bed transport regulated under animal cruelty statute
• Oregon, Maine, Massachusetts, Minnesota, NH, RI: Open truck bed restrictions
• All other states: Distracted driving laws may apply; no specific restraint mandate in most

Frequently Asked Questions

Can I be fined for having my dog unrestrained in the back seat?

In most states, no — unless the dog is visibly distracting you or the behavior rises to an animal cruelty threshold. However, laws are evolving, and several states have introduced pet restraint bills in recent legislative sessions.

Does my dog’s harness need to be crash-tested to satisfy the law?

Currently, no US state requires crash-tested restraints specifically. Legal compliance is a much lower bar than crash safety. Any secured restraint satisfies most current statutes; crash-tested gear is about protecting your dog, not about legal compliance.

Can I use a regular walking harness as a car harness?

A walking harness is designed for the static load of pulling — not the dynamic impact forces of a collision. Most walking harnesses fail crash tests. Use a harness specifically designed and tested for vehicle use.

What is the safest position in the car for my dog?

The back seat, properly restrained with a crash-tested harness. The center rear position is marginally safest, as it is furthest from doors and side impact zones.

Are pet seatbelts compatible with all cars?

Yes — tethers that loop through the seatbelt buckle work in virtually any vehicle with standard seatbelts. Our 2-pack adjustable tether fits all common seatbelt configurations and adjusts for dogs of different sizes.

The Bottom Line

Follow the law in your state as a baseline — but understand that legal compliance in most jurisdictions does not mean your dog is safe in a crash. The standard for actual safety is a crash-tested harness, short tether, and back seat position.

If you are not sure where to start, a properly fitted harness paired with an adjustable seat belt tether is the most practical setup for most dogs and most vehicles. It takes thirty seconds to attach, satisfies legal requirements in every state, and meaningfully reduces the risk of injury to your dog and passengers in a collision.