I use my Nokia BH-501 BT Headset with Nokia phone daily (while walking to & from the office), and it is a fantastic music and call handling solution. I am intrigued as to why I get repeated but random momentary dropout  at 4 or 5 of the traffic lights on Queen St, Akl. I have failed to identify which phase of the lights or pedestrian signal it is on, and am confused as to why B/T would be used at traffic lights, and why it would interfere with my signal - the phone sits in my top pocket so only 50cm from headset. Any of you boffins have a clue?
Thanks
Mark