|
Back in the 1970's, I saw the electronic flash on a German radar activated
stoplight camera going off repeatedly during a snowstorm. No cars around,
of course, but I bet they got lots of snowflakes!
Cortland (What I write here is mine alone.
Nick Rouse wrote: I don't know if the technique is used in America but the speed cameras in the UK are triggered by radar but produce evidence by taking two pictures illuminated by two strobe pulses timed about 150ms apart. Stripes are painted across the road spaced so that between flashes a vehicle will traverse one stripe pitch for every 10mph.If the pictures show you have traversed more than 7 stripe pitches (on motorways)you will receive copies of these photos together with a summons to appear in court.Nick Rouse------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server. |
