12:45 PM EST, November 26, 2012
When a police officer operates a radar unit to check speeding cars, he is usually trained and certified to operate a radar unit and to testify in court concerning the readings it obtained ("Not so fast," Nov. 20).
Usually, the radar unit is calibrated at the beginning of each shift with a tuning fork. So how can a stationary radar speed camera operate 365 days a year in extreme heat and cold and still be accurate? This does not make any sense.
I bet if the speed cameras were not producing great numbers of tickets, it would make your head spin to see how fast the technicians were out checking each unit.
Howard P. Fink, Baltimore
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