170
Just for counting? For speed also?
(lemmy.world)
Let us help you identify that mysterious object you’ve found.
Currently in CHALLENGE mode: If you've got something obscure knocking about, post a picture, and let's see how we do. Please prefix such posts with "CHALLENGE:" so we know we've got a fighting chance.
The circumference? Why would that matter? You have distance between the detectors and you have the time between their triggering. That's enough to get a good estimation of the speed and direction of the triggering vehicles.
Yeah I mixed up the knowledge of how wheel size impacts speedometer accuracy with this
Whoops