Restrain your dog in the car with a crash-tested harness or secured crate placed in the back seat or cargo area.
Letting your dog ride loose in the car is a distraction hazard and a safety risk, but not every pet restraint actually protects in a crash. The Center for Pet Safety (CPS), which runs independent crash tests on pet travel gear, draws a sharp line between products that merely prevent distraction and those that provide real crash protection. The evidence-based approach is simple: choose an independently crash-tested restraint, install it per the maker’s instructions, and keep the dog in the rear seating area.
Why Most “Crash-Tested” Labels Fall Short
In 2013, CPS completed a landmark harness study sponsored by Subaru of America, using weighted, instrumented simulants — no real dogs were harmed in testing.
The tests run at 30 mph, simulating a moderate collision.
Choosing Between A Harness And A Crate
Both harnesses and crates can work, but they are not interchangeable. A crash-tested harness gives the dog freedom to sit, stand, and lie down while staying anchored. A crate or carrier offers more containment but must be secured so it cannot become a projectile.
If you choose a crate, pick one that is anchored to the vehicle and sized so the dog can stand, turn around, and lie flat.
| Restraint Type | Best For | Key Caveat |
|---|---|---|
| Crash-tested harness | Everyday rides, back-seat passengers | Must fit snugly; verify current certification |
| Anchored crate or carrier | Long trips, anxious dogs, cargo area | Wire crates alone provide no crash protection |
How To Install And Secure The Restraint
Installation is where most restraints fail. Follow the manufacturer’s instructions exactly, and make sure the harness cannot shift or slide during a collision.
- Use the rear seating area or a secured cargo area — never the front passenger seat with an active airbag, and never the driver’s lap.
- Fit the harness snugly. The dog should sit and lie down comfortably, but the webbing should not allow a forward launch. Connect the harness to the seat belt or the LATCH anchors.
- Skip extension tethers and zipline-style products. CPS says these increase the risk of injury because they let the dog travel too far toward the front seats.
- Acclimate your dog beforehand. A dog that panics in a new harness is a distraction; practice short sessions around the house and car before a long drive.
When you finish, tug the restraint firmly. If it moves more than an inch or two, tighten it — that loose fit is exactly what defeats the crash protection.
Once you know which style works for your dog and your vehicle, a tested product roundup can help you compare the best auto restraints for dogs on the market side by side.
Common Mistakes That Turn A Restraint Into A Hazard
The biggest error is trusting marketing language. “Crash-tested” is not a regulated term, and no universal US law mandates a specific dog restraint standard. Voluntary certification through CPS is the closest thing to a trustworthy benchmark.
Other frequent mistakes: letting the dog ride with its head out the window, placing the dog near a deployed airbag, and treating a loose crate as safe just because it is heavy. If the crate is not bolted down or strapped securely, the harness is the safer option.
References & Sources
- Center for Pet Safety. “2011 Pilot Study.” Documents the 100 percent failure rate of tested harnesses.
- CBS News Miami. “Tests On Dog Harnesses Show 100 Percent Failure Rate.” Reports on the pilot study findings.
- Center for Pet Safety. “2013 CPS Harness Study Summary.” Details the 30 mph crash tests and top-performing models.