Posted by Rob on October 03, 2001 at 00:55:02:
In Reply to: Re: new antenna on light post posted by Brandon on October 02, 2001 at 23:12:00:
The antenna is for a system like a wireless key-card system(a transponder). Airports use them to let taxicabs and busses to pass though the gate and pay later. They also have these antennas before truck scales. The truck passes over the antenna to get a truck ID # and then goes over the scale in the road. Then from there it tells the driver to stop at the scale or to continue. With the question in hand, this system is designed for busses. It is called Transit Signal Priority (TSP). It does one of two things. It lets the dispatcher or a system know where a bus is and if it is late at all. And if it is late, the system will try to make the lights green to make it more on time.
For more info go to http://transit.metrokc.gov/programs_info/tsp/tsp.html It has pics to what the equipment looks like and can explain it better than I just did. Hope this helps.
Rob
: Looks similar to the devices we have at almost every major (light controlled) intersection here. It is an infrared sensor that detects the cars at the intersection and in turn controls the light cycles.
: : i snapped this picture at the corner of 85th ST N and hiway 99 of a new antenna .. or is it a vehicle sencing device??
: : what is it?
: : http://zatloka.tripod.com/85.jpg