It makes it clear the direction of movement and how the user has to position themselves so they can ride it without thinking about it- but it saves power from slowing down
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Wonder if they’d use a current threshold for determining if someone is on the escalator?
I’m actually a retired electrical engineer, used to do aircraft avionics. Anyway it’s a simple thing to measure amperage loading on the motor to set a threshold for sleep and wake. But in engineering there’s always more than one way to accomplish a task. An optical sensor and timer would be another way to do it.
