M2i, in collaboration with the Adhesion Institute TUDelft and 5 SME companies started a project on the application of adhesive bonding in loop-detection systems (see Figure 1).
Such loop-detection systems can be found in almost every street for controlling the traffic lights or as detectors for parking lot entrances. The participating companies all play a role in this process, from developing and applying loop detection wires to connecting the loops to control electronic systems.
(Figure 1)
Applying such detection loops is a time consuming operation, with traffic blocking as a result. This is due to the fact that normally the wiring takes place after the concrete or asphalt ahs been installed. This requires cutting of the concrete, placement of the wiring and subsequent sealing of the wires. All and all, this process takes a full shift time. No wonder that normally this is performed at night hours.
To increase the speed of this process, as well as to increase flexibility and reduce the costs, a novel approach is being investigated. The idea for this approach is inspired by “Rollpave”, in which the asphalt is applied from a role as indicated in Figure 2.
(Figure 2)
The basic idea of the Prefab loop-detection plates will be to have the wiring pre-bonded to plates of a suited flexible material. These plates can than be applied in short time by adhesive bonding to the substrate. As one can image, such a process will make the application of loop- detection systems much vaster and flexible. A schematic representation is give in Figure 3.
Within the project, the optimal bonding mechanism as well as the design of the product will be investigated. 
(Figure 3)
