With its TAPS sensors, LTS AG has had the opportunity to prove in Bülach that its system works equivalently to the existing infrastructure. Advantages of the TAPS sensors are the fast installation time, low installation costs and the real-time data acquisition.
In order for the TAPS system to prove itself in traffic, the canton of Zurich provided an access road in Bülach namely the south access road of Schaffhauserstrasse in the direction of Schaffhausen. In this access road, TAPS sensors were drilled next to or into the existing loop detectors. From the comparison of the TAPS signals and the signals of the existing loop detectors, comparisons and characteristic values can be made.
The red/green dots mark the TAPS detectors. The sensor data are sent in real time to the gateway, which is in direct communication with the traffic light system. Of the total of 16 sensors installed, four are used for congestion detection (the last four in the picture) and twelve sensors provide information about the occupancy of the respective lanes.
The congestion detectors recognize a developing backlog at an early stage and forward this to the traffic light system. From there, the light signals are switched so that traffic can continue to flow as efficiently as possible. To map this type of congestion detection with induction loops, it is necessary to mill up the road by more than 60 meters. The TAPS system, on the other hand, provides adaptive congestion monitoring with little infrastructure. The sensors are embedded in the roads by means of core drilling, which does not hold up traffic for long and drastically reduces road work.