Detector Loop

A detector loop, or induction loop, is an electro-magnetic loop built in a road surface that provides traffic data, or alerts a traffic signal system to the presence of a vehicle or bicycle.

Modern induction loops are able to detect the different types of vehicles crossing them, including cycles, cars, trucks, etc.

They can, and should, be built into cycleways, where appropriate, to reduce delay and inconvenience for bicycle traffic. 

Detector loop in cycleway