Which Vehicle Detection Loop Is Right for Your Project

Choosing the wrong loop type for a job is one of the most common — and costly — mistakes in traffic and access control installation. The three main installation methods each have distinct strengths, and the right choice depends on your pavement type, traffic load, project timeline, and whether you're looking for a permanent or temporary solution.

Here's a practical breakdown to help you make the right call before you order.

Saw-Cut Loops

Saw-cut loops are the industry standard for permanent pavement installations. A diamond blade saw cuts a slot into the asphalt or concrete surface, the loop is laid in, and the slot is sealed with a professional-grade loop sealant.

Best for:

• Traffic signal detection
• Toll and highway applications
• Permanent parking and access control gates
• Any site with established asphalt or concrete pavement

Pros:

• Most reliable long-term performance — 10+ year service life when properly installed and sealed
• Wire is fully protected inside the pavement
• Handles heavy truck traffic without physical damage to the loop
• No splices with standard size preformed loops

Cons:

• Requires saw equipment and pavement cutting — not suitable for new, uncured pavement
• More labor-intensive upfront than other methods
• Pavement repair needed if the loop ever requires replacement

Browse our P-NL Saw-Cut Loops and X-NL Saw-Cut Loops for saw-cut applications.

Direct Burial Loops

Direct burial loops are installed before the final pavement layer is laid — the loop wire is placed in the binder layer (sand or crusher stone) and then paved over. This method is ideal when you're working on new construction or a pavement overlay project.

Best for:

• New road construction and pavement overlays
• Sites where saw-cutting is not feasible or permitted
• High-volume installations where saw-cutting time is a constraint

Pros:

• No saw equipment or slot sealing required
• Faster installation on new construction projects
• Loop is fully encapsulated in pavement — excellent long-term protection once paved

Cons:

• Requires coordination with paving crew — timing is critical
• Cannot be used in existing, cured pavement without a mill-and-overlay
• Wire must be secured to prevent shifting before paving passes over it
• Replacement requires pavement removal

See our E-NL Direct Burial Loops for direct burial projects.

Surface-Mount Loops

Surface-mount loops are installed on top of existing pavement and adhered with epoxy. They are purpose-built for situations where cutting or burying is not an option.

Best for:

• Temporary installations and construction zones
• Sites where saw-cutting is prohibited (e.g., Parking Garages, newly poured concrete, bridge decks)
• Indoor applications such as parking structures
• Situations requiring rapid deployment and removal

Pros:

• No pavement cutting required — fastest installation method
• Removable and reusable in many applications
• Works on surfaces where saw-cutting is not permitted
  

Cons:

• Most vulnerable to physical damage — exposed to traffic wear, snowplows, and road maintenance equipment
• Shorter service life than embedded loop types
• Not recommended for high-speed or heavy truck lanes
• Requires periodic inspection and potential re-adhesion

Browse our Surface-Mounted Loops for above-grade applications.

Quick Comparison

Still Not Sure Which Loop to Specify?

Every project has its own constraints — pavement age, traffic volumes, jurisdiction requirements, and budget all factor in. Our team works with contractors and engineers daily and can help you specify the right loop type and quantity for your job.

Request a quote and tell us about your project — we'll recommend the right product and get you pricing fast.