The innovative ZELT inductive loop sensor invisibly counts vehicles in mixed vehicular traffic with an accuracy of +/-5%.  The system is ideal for permanent or temporary traffic counting.

Applications include vehicle counting on asphalt or unmade roads and vehicle counting at a car park entrance. Using an inductive loop inserted in the road at a depth of 2-5cm, the Zelt vehicle monitor detects the electromagnetic signature of each vehicle as it passes goes over the loop.

Loops are 1.5 m long, and up to four loops may be joined together; because they are inserted in the road, the sensors are almost completely invisible, reducing the risk of vandalism. A 7.2V lithium-ion battery provides trouble free operation for up to a year.

Developed, tested and patented by the CETE Sud Ouest in 1999, the Zelt vehicle monitor was adapted and validated by Eco-Counter.