Abstract: A radio frequency identification (RFID) automatic vehicle identification (AVI) system configured to mitigate signal interference, the system comprising a plurality of RFID readers, comprising a first RFID reader and a second RFID reader; and a plurality of antennas, wherein a first antenna is connected to the first RFID reader and a second antenna is connected to the second RFID reader. Prior to the first RFID reader transmitting a signal through the first antenna, the first RFID reader samples a received radio frequency (RF) signal from the first antenna, and if the received RF signal meets predetermined strength and frequency criteria, the first RFID reader inhibits transmission of the signal through the first antenna.

Abstract: A mounting assembly for sectorized antennas comprising: a plurality of vertical mounting columns, each of said plurality of vertical mounting columns being configured to support an antenna; and a first horizontal bracket having a top surface and a perimeter, said perimeter being defined by an inner portion configured to be secured to a vertical support structure and an outer portion configured to support said plurality of vertical mounting columns, wherein said vertical mounting columns may not be rotated for azimuth adjustment, wherein said inner portion of said first horizontal bracket comprises a V-notch positioned substantially at the center of said inner portion, a first inner vertical surface integral with said first horizontal bracket, and a second inner vertical surface integral with said first horizontal bracket, and wherein said outer portion of said first horizontal bracket comprises at least one outer vertical surface integral with said first horizontal bracket.