The Free Flow Profiler profiling system measures and classifies vehicles and objects of all types in free-flow traffic conditions. Eye-safe 2D LiDAR sensors scan objects up to 75 times a second, thereby enabling fully-automated length, width and height measurement. The vehicle speed and direction of movement are also taken into account here. The measurement data recorded can be used to generate a 3D model for each vehicle which also visualizes excessive heights, widths and lengths. In addition, the modular system setup enables functional extensions such as the counting of axles or the detection of overheated vehicle parts.