Question about speed enforcement

[Falconis]

I believe they only work roads/highways that have signs clearly posted "patrolled by aircraft" or something similar.

Signs are for deterrence. Only real signs I imagine are used are the mile markers to get timing info off of

[me109g4]

Wrong assumption JS89,,, but back when I played with radar it hung outside the car and we calibrated it with a tuning fork,,, Times change.

[JS89]

Wrong assumption JS89,,, but back when I played with radar it hung outside the car and we calibrated it with a tuning fork,,, Times change.

Not too much, tuning forks are still used today.

[sharxbyte]

Don't speed?