Electrical variations

Don Y wrote:


> While the city says the tenth of a second is probably due to variations in
> electricity, city Inspector General Joe Ferguson says effective
> enforcement should mean an error-free strategy."
Absolute BULL!  The timing of the lights is controlled by quartz
crystals.  (I did see a light once that had jumped to the 3rd harmonic,
which crystals have a habit of doing.  That was a SHORT light!)

Jon