New Device Lets Bicycles Trigger Traffic Light Sensors

If you’re a cycler, you know this problem all too well: you’re stopped at a traffic light, the only vehicle at a controlled intersection, and are waiting for the seemingly never-ending red light to change. Now, thanks to Nat Collins’ new development, you may not have to encounter this problem.

Collins has created a device called the Veloloop, which uses a patented circuit technology to trigger sensors in asphalt. In essence, the device is designed to make traffic light sensors think that your bike is a car.

This from Gizmag:

Embedded “inductive loop” traffic sensors work by creating an electromagnetic field in the surface layer of the road. When a sufficiently-large metal object – such as a car – stops above the sensor, it creates eddy currents within that field. This is detected by the system’s traffic signal controller, which causes the light to change.

Read the full article here.


Typically, a bicycle does not have enough metal to trip the sensors – that is where Veloloop comes in. Pulling from his 15 years experience in the semiconductor industry, Collins allows cyclists to trigger these sensors with ease.

You can find the Veloloop on Kickstarter.

Interested in sensor technology? Check out our Sensor Division, where our scientists work to satisfy the ever-increasing demand for faster, cheaper, smaller, and more sensitive means to monitor the chemical, biological, and physical world around us.

You can also head over to the Digital Library and read our latest published research in the the field of sensors.

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