Why Cargo Area Connections Can Be Risky
Many pet owners ask how to secure a pet in their vehicle cargo area using a harness or crate. While some brands promote this as a safe option, the cargo area often has structural limitations that can compromise your pet’s protection in a crash.
Cargo area anchors are not always weight-rated for the forces generated in an accident, and the cargo platform itself may not be as solid as it appears.

Check Anchor Strength Before You Secure Your Pet
Before choosing a cargo-area connection, contact your vehicle manufacturer to verify:
- Whether the cargo anchors are strength-rated
- The load capacity of the cargo platform
- Whether anchor upgrades are available for your specific model
Some vehicles can be modified, but only the manufacturer can confirm what is safe.
Understand the Forces Involved
To understand how much force your pet can exert during a crash, here’s a simple formula to estimate crash forces:
Mass* x Acceleration = Force
- Harness connections: Mass = your dog’s weight
- Crate connections: Mass = your dog’s weight plus the weight of the crate
This quick calculation helps illustrate why proper anchor strength is essential.
Why Extension Tethers Increase Risk
Many cargo-area harness setups require an extension tether.
Avoid Extension Tethers and Zipline-Style Products
CPS does not recommend extension tethers or zipline-style products because they increase the risk of injury to you, your passengers, and your pet during sudden stops or crashes.
Learn more about the risks of Extension Tethers.
Best Practices for Crate Safety: Use Strength-Rated Anchor Straps
Crates should always be secured with strength-rated anchor straps.
In the 2015 CPS Crate Crashworthiness Study, proper anchor straps significantly reduced crate excursion into the seatback or passenger compartment.
Even vehicle manufacturers face limitations with cargo-area connection points. This is another reason pet owners must choose their setup carefully.
CPS Recommendations for Pet Owners
To protect your pet and your family:
- Verify cargo anchor strength with your vehicle manufacturer
- Avoid extension tethers and zipline-style products
- Use CPS Certified® harnesses, crates, or carriers [link to Certified Products] whenever possible
- Anchor crates with strength-rated straps
- Review CPS research and certified product lists before purchasing
CPS is here to help you make informed, science-based decisions that keep everyone safer on the road.



