How does an automatic road barrier decide when a vehicle is coming?

tired_lemming@sh.itjust.works to No Stupid Questions@lemmy.world – 43 points –

So just something that's been on my mind. At my workplace there's an automatic road barrier that lifts up and down when vehicles arrive. However, it's not used for a carpark system when people wave their tickets or something. It just goes up and down when a vehicle shows up.

However, it sometimes goes up for when say a pushcart is being rolled over whereas it wouldn't for a guy pushing a bin.

So tldr, how does an automatic road barrier decide that yes, a vehicle is coming, and therefore opens up?

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looks like it really depends, https://us.beasensors.com/en/segment/vehicle-sensing-solutions/barriers/ has some information about the specific sensora they use.

Your URL code is wrong. [https://us.beasensors.com/en/segment/vehicle-sensing-solutions/barriers/](url), this gives the URL as text but the link is just URL.

This is working URL code: https://us.beasensors.com/en/segment/vehicle-sensing-solutions/barriers/ although you could just type the URL and the website/app should make it a link automatically.