They sure do it in Washington state.

Bob Gardner

"Jim Buckridge" wrote in message
om...
I saw one of these signs along I-78 in NJ. Now, I find it
***REALLY*** hard to believe that this particular sign is true. The
highway is congested and with radar guns and all, monitoring speed by
aircraft (copter maybe?) seems expensive and unnecessary.

I know I've seen these signs elsewhere - are there still places where
speed is monitored by aircraft?