How do traffic department personnel detect a car going over speed limit ? [I Obey the Speed Limit]

What sensors do they use ?

And if anybody knows what data the sensors gather and how they calculate instantaneous speed, that would be great too ?

Or do they use a pair of sensor located close to each other ? That would make it easier. IDK

This is NOT a homework question, BTW

And most importantly, can bluetooth sensors be used to do that?

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iamnikki · 31-35, F

It's not important if one simply obeys speed limit

MasterofNone · 26-30, M

@iamnikki It is, if you want to catch those who are not.

iamnikki · 31-35, F

@MasterofNone if this is a part of your job, shouldn't you already be informed of the workings? Seems like a weird question 🤷‍♀️ hope you find your answer

MasterofNone · 26-30, M

@iamnikki It is not a part of my [i]job[/i]. Should you only do that which is your job ?🤦‍♂️