How Traffic Lights Know When to Change
0:18
YouTubeThefactskool
How Traffic Lights Know When to Change
How do traffic lights know when to change? Many traffic lights use induction loop sensors buried in the road. These loops create magnetic fields, and when a car stops above them, the field changes—telling the traffic light computer someone is waiting. This short animation explains how traffic lights work. 🔑 Tags how traffic lights work how ...
1.7K views1 month ago
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