Pavement detector loops & how to use them
Posted: Tue Oct 16, 2012 8:43 am
I work for a Traffic Engineering company, and was recently involved in the design of a major intersection upgrade. The works included the installation of detector loops within the pavement at the approaches to the intersection. Some of my cycling mates recently asked me if these detectors are triggered by the weight of vehicles, and questioned whether the weight of a bike + rider has any impact on the system. The detectors are actually NOT based on weight, and work by sensing objects passing through electromagnetic fields. According to the contractors installing the detectors, the best way for cyclists to trigger these detectors is to ride directly over the actual wiring, which is generally under the edges of the rectangular shape you can generally see within each lane of the roadway. Like many others, I used to ride through the centre of the rectangle.