How do one-way traffic spikes work?

One-way traffic spikes are angled metal teeth that fold flat for vehicles traveling in the authorized direction, then spring upright to puncture tires of vehicles going the wrong way. They operate passively with no power required.

Are traffic spikes safe for authorized vehicles?

Yes. Traffic spikes fold flat under forward vehicle weight and only puncture tires of vehicles traveling in the unauthorized direction.

What is the difference between traffic spikes and hydraulic road blockers?

Traffic spikes are passive one-way devices requiring no power. Hydraulic road blockers are powered systems that fully retract for authorized vehicles and rise to block unauthorized entry in both directions.

Can traffic spikes be used in parking lots?

Yes. Parking lot exit lanes are the most common application, preventing vehicles from entering through the exit and enforcing one-direction vehicle flow.

What is the load rating of traffic spikes?

In-ground tire killers support up to 80,000 lbs when flat. Surface-mount speed bump spikes support up to 40,000 lbs. Hydraulic road blockers support 80,000 lbs or more.

Do traffic spikes require installation or maintenance?

Surface-mounted spikes bolt to existing pavement. In-ground tire killers require a concrete trench. Both are low-maintenance with stainless or galvanized steel construction. Hydraulic blockers require electrical connection and annual hydraulic checks.

How are in-ground tire killers installed?

In-ground tire killers require a concrete trench poured to the manufacturer depth spec, typically 4-6 inches. The spike housing sits flush with the road surface when armed. Professional installation with road-cutting equipment is required.

How do traffic spikes compare to bollards for perimeter security?

Traffic spikes enforce one-way vehicle flow passively at low cost ($800-$4,000). Bollards physically stop vehicles in any direction and are better for pedestrian zone protection ($8,000-$25,000). Use spikes for exit lane control and bollards for building perimeter protection.