structure:

Flexi-Loop stands for an easy, rapid and at least for the safest way to install an inductive loop in asphalt, concrete, or in sand under pavement. A Flexi-Loop usually lasts for many years under rough conditions.

e.g. at drive-in lanes in fast-food restaurants, or at traffic lights and weight stations, or  wherever extreme mechanical and thermal stress causes a deformation of the raodsurface.