The first test flight,carried out in Ashtabula ,Ohio,was aimed at infrastructure mapping of a transportation corridor. Several lidar strips were flown in opposite directions over a 23 km long section of l-90.the data were collected from an altitude (agl) of about 620 m with 14 degrees scan angle,and the lidar scanner was operated at 70 kHz pulse rate and 70 Hz scan frequency that resulted in a point density of about 5pts/m•.both elevation and intensity data were collected.to support the investigations on the achievable accuracy improvement using the designed targets