pressure pad

noun — 3 senses

noun

Medicine, Sciences A piece of padding used to relieve soreness caused by constant pressure, such as bedsores.

A soft padded sensor that responds to pressure.

Colloquial An induction loop sensor that detects when vehicles are stopped at traffic lights (commonly believed to sense the weight of the vehicle).

I believe there were pressure pads embedded in the road to monitor the amount of traffic.2021 February 23, The Road Ahead, Brisbane, page 8, column 3:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.