Last June, Endsville installed highway traffic cameras, in the hope that drivers along the highways would reduce their speeds. This June, the number of motorists caught speeding by the traffic cameras is nearly twice that caught last June. All of the following, if true, can help account for the increase in motorists caught speeding by traffic cameras EXCEPT? ['Since the cameras are virtually hidden, many motorists remain oblivious to the fact that the city has installed traffic cameras.', 'Police, throughout the year, have been increasingly less likely to pull over speeding motorists, since each month more highways in Endsville are equipped with traffic cameras.', 'In the last year, there has been an influx of residents to Endsville and thus there are more vehicles on the road at any one time.', 'This June, compared to the last, saw more than a twofold increase in the number of traffic cameras installed along the highways of Endsville.']