sentences:  New Jersey had been quite fond of traffic circles starting in 1927, when the Airport Circle in Pennsauken Township opened to traffic on July 1, 1927, as the first such traffic rotary in the United States.While the state had as many as 67 traffic circles at its peak, projects initiated by the NJDOT since the mid-1970s had reduced the count to 37 by 1999.In addition to the traffic issues, the NJDOT undertook an analysis of the drainage issues associated with the road infrastructure, in conjunction with the local office of Parsons Brinckerhoff.