Patent ID: 7382275

Claim:
A mobile enforcement reader (MER) disposed in a vehicle, the MER for reading signals from a transponder and the MER comprising: an antenna configured to receive signals in a plurality of different antenna receive directions with at least two of the plurality of antenna receive directions being orthogonal to each other; a reader coupled to receive signals from said antenna; and a control/display unit (CDU) coupled to said reader and in response to signals from said reader, said CDU provides an output signal having information concerning the transponder, said CDU for selecting one of the plurality of different antenna receive directions and for processing transponder signals provided thereto from said reader wherein, said reader reads from the transponder: a Transponder ID; a location of the last toll point; a time of the last toll point that data was collected from; and agency data including the agency and vehicle classification, wherein at least one of the plurality of different antenna receive directions is a direction which is substantially orthogonal to a direction of travel of the vehicle in which the MER is disposed.