Transporting a kayak in a truck bed is one of the most common ways to get your vessel to the water, but there are rules about how far it can safely and legally hang out of the back.
As a general rule, your kayak should not hang more than 1.2 metres (4 feet) out of the back of your truck. Most countries and states have similar regulations, though the exact limit varies by location. If your kayak extends beyond this, you are typically required to attach a brightly coloured warning flag to the end so other drivers can see it.
This guide covers how to transport your kayak in a truck safely and legally.
Using a Roof Rack
For longer kayaks that don’t fit safely in a truck bed, a roof rack is often the better option. Most kayaks up to 5.5 metres (18 feet) can be transported on a roof rack with the right equipment.
When choosing a roof rack for kayak transport, look for one rated to carry the weight of your kayak, with padding or cradles to protect the hull. J-cradle style racks are the most popular as they hold the kayak on its side, reducing wind resistance and allowing you to carry two kayaks side by side.
How to Secure Your Kayak in a Truck
Whether you’re using a truck bed or a roof rack, securing the kayak properly is critical. A kayak that shifts or falls during transport is a serious hazard to other road users.
Use cam buckle or ratchet straps
Cam buckle straps are the preferred choice for kayaks. They provide firm, even tension without the risk of overtightening that comes with ratchet straps. Use a minimum of two straps across the hull, positioned roughly one third from the bow and one third from the stern.
Use bow and stern lines
In addition to the hull straps, attach bow and stern lines from the kayak to the front and rear of your vehicle. These prevent the kayak from shifting forward under braking or backward under acceleration. This is particularly important for longer kayaks.
Attach a warning flag
If your kayak extends beyond the rear of your truck, attach a brightly coloured warning flag to the end. An orange or red flag at least 30cm x 30cm (12 x 12 inches) is the standard requirement in most locations.
Check your straps regularly
Wind resistance at highway speeds can loosen straps over time. Stop and check your tie-down straps every hour or so on longer trips.
Driving Safely With a Kayak
Transporting a kayak changes how your vehicle handles. The extra weight and length affect braking distance, cornering, and wind sensitivity. Keep these points in mind:
- In strong crosswinds, reduce your speed
- Allow more braking distance than usual, particularly at highway speeds
- Take corners more slowly and with a wider line
- Be aware of height restrictions in car parks and under bridges if using a roof rack
- Avoid sudden lane changes that could destabilise the load
Legal Requirements
Road rules for oversized loads vary by country, state, and territory. In Australia, the general rule is that a load may not extend more than 1.2 metres beyond the rear of the vehicle without a warning flag, and not more than 1.5 metres with one. Check the specific road rules for your state or territory before travelling.
If you are travelling internationally or across state lines, research the rules for each jurisdiction you will be passing through. Penalties for non-compliance can include fines and liability for any accidents caused by an unsecured load.
Final Thoughts
Transporting a kayak in a truck is straightforward with the right preparation. Keep the overhang within the legal limit, secure the kayak with proper straps at a minimum of four points, and attach a warning flag if the kayak extends beyond your truck. Taking a few extra minutes to secure your load properly is worth it for the safety of everyone on the road.