> Those are wires. Inductive pickups. Try them on a bicycle for > fun some day Often I cycle down to the supermarket late at night, very quiet and not much traffic around. Several of the lights between here and there must be on timers with a vehicle over-ride. If I get to one that's red I'll have to wait an absolute age for it to turn green unless at least one car turns up next to me. On the odd occassion when I can see no cars in any direction I'll jump the red, but there are so many unmarked police cars around these days ..... Joe --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .