> and all RFID tags of the same frequency will respond to the reader at the same time Depends on the tag design. Using Q Values you can avoid the collisions to

> and all RFID tags of the same frequency will respond to the reader at the same time Depends on the tag design. Using Q Values you can avoid the collisions to some extend. http://www.rfidsb.com/anticipating-your-starting-point-with-the-q-value/ http://www.rfidsb.com/anticipating-your-starting-point-with-... Not sure how much the spinning tires distort signals...etc. Def out of my scope of knowledge. > It makes no sense to attempt to use RFID for tracking cars. Agreed, grabbing license plates makes more sense.