Radar Vehicle Detection for Gate Automation: Loop Alternatives

t288-41

Radar vehicle detection uses a non-contact sensor mounted above or beside the gate to sense approaching vehicles, so no cutting into the driveway is needed. It is a strong alternative to inductive loops on sites with thin or damaged slabs, paved or decorative surfaces, or where groundwork is not allowed.

Why inductive loops are not always the right choice

Inductive loops are buried wire coils cut into the asphalt or concrete in front of the gate. They work well on new, solid surfaces, but many sites cannot accept them. A thin slab, a tiled or stone-paved driveway, a waterproofed deck or a shared courtyard may rule out saw cutting altogether.

Loops also need periodic attention. Cracks in the surface, frost heave and nearby heavy traffic can damage the wire over time, and repairing a buried loop means breaking up the pavement again.

How radar vehicle detection works at a gate

A radar detector sends a low-power signal toward the approaching vehicle and reads the reflection. It can tell whether a car is moving toward the gate, standing in the detection zone or leaving, and it sends that signal to the gate controller to open or hold the leaf.

Because the sensor sits on a pole, wall or bracket, the installation is entirely above ground. The detection zone is set during commissioning so that the gate opens in time without reacting to pedestrians or passing traffic on the street.

Where radar fits best

Radar is particularly useful in these situations:

Driveways where cutting the surface is not allowed
Stone, interlock or decorative paving that should stay intact
Thin or recently laid slabs
Shared entrances where several vehicle types must be detected
Retrofits to existing electric sliding or swing gates

For each case, the sensor position and beam angle must be confirmed against the actual layout on site.

Planning the sensor position and detection zone

Good performance depends on where the radar is mounted. It should have a clear view of the approach lane, without fences, plants or metal objects blocking the beam. The mounting height and angle determine how far ahead a car is detected and how wide the zone is.

Your installer should check the approach length, the gate travel time and the typical speed of vehicles entering the site. Exact values are set on site with the engineer, not guessed from a catalogue.

Safety and compliance considerations

Vehicle detection is only one part of a safe gate. Photocells or safety edges should still protect the leaf against crushing, especially on sliding gates. Any installation near a public pavement must consider pedestrians, children and cyclists.

Where barriers or railings are part of the entrance, the metalwork should also follow the relevant guidance, such as the Israeli railing standard SI 1142, and the exact requirements are confirmed with the engineer during design.

What the process looks like with our factory

We start with an inquiry and photos of the entrance. Next comes an on-site measurement to review the approach, the surface and the existing gate. Based on that, we prepare a drawing and a written specification that show the sensor position and the gate layout for your approval.

After approval, the gate is manufactured in our Tel Aviv workshop, finished with hot-dip galvanizing or powder coating, and then installed. Sensor setup and testing are completed on site before handover.

Frequently asked questions

Is radar detection as reliable as inductive loops?

Radar is reliable when it is correctly positioned and set up for the approach. It is often preferred where loops cannot be installed, because it avoids surface damage and wear.

Can radar be added to an existing gate?

Yes, in most cases a radar detector can be retrofitted to an existing electric gate, provided the controller supports it and the mounting position has a clear view of the lane.

Will radar detect pedestrians?

Radar can be tuned to respond mainly to vehicles, but it should be tested on site. Photocells and safety edges remain necessary for people near the moving leaf.

Do I need to cut the driveway for radar?

Normally no. The sensor is mounted above ground on a pole, wall or bracket, so the driveway surface stays intact.

Common mistakes to avoid

A common mistake is mounting the radar where branches, metal fences or passing traffic block its view, which causes false or late detection. Another is skipping the on-site test after setup, so the detection zone is never checked with real vehicles.

Our recommendation

Plan the sensor position before fixing the gate in place, and test the detection zone with the car you use most often. Keep photocells or safety edges in place even when radar is installed.

Summary

Radar vehicle detection offers a surface-free alternative to inductive loops, suited to sensitive or unsuitable driveways. Correct mounting, a clear detection zone and proper safety devices make it a dependable choice.

השאירו פרטים ונחזור אליכם