My company's premises overlook a roundabout that is part of of a virtual crossroads - the A37 and A30, as well as several other routes: It's called Five Ways,

My company's premises overlook a roundabout that is part of of a virtual crossroads - the A37 and A30, as well as several other routes: It's called Five Ways, there are four obvious ways these days, the other one becomes apparent when you look at a map and history. Also, we are surrounded by residential housing, a cemetary, and a college. I deployed Home Assistant as a building monitor and stuff a few years back. HA gains new super powers with each release. I let it listen to the airwaves and when the funky new Bluetooth stuff came online, it now sees a lot more stuff. We also have a couple of Unifi APs. So HA can listen to 2.4 and 5GHz, we have Zwave and Zigbee dongles in it and Bluetooth. It notices every car that goes past on two major single carriageways, when they advertise themselves. The roads are classified at around 30,000 cars per day each. Also I see several toothbrushes (Oral B+) and a lot of lights ... a lot of lights. I've already started having a chat with my neighbours about IoT. Cars are a bit of a worry ...