Abstract: Systems and methods for determining a degree of wetness of a road surface from Light Detection and Ranging (LiDAR) point clouds are provided. The method comprises generating, using a LiDAR system, at least one point cloud, wherein the LiDAR system comprises a processor, and, using the processor, identifying and isolating one or more road surface points within a point cloud of the at least one point cloud, wherein the one or more road surface points indicate a road surface portion within an environment of the point cloud, analyzing the one or more road surface points to determine a number of the one or more road surface points that are zero intensity returns, and, based on the number of zero intensity returns, determining a degree of wetness of the road surface.

Abstract: Systems and methods for detecting a presence of water along a surface and adjusting a speed of a vehicle are provided. The method comprises generating one or more data points from one or more sensors coupled to a vehicle, and, using a processor, determining, based on the one or more data points, whether water is present along a surface, when water is present along the surface, determining a speed adjustment of the vehicle based on the water present along the surface, and generating a control signal configured to cause the vehicle to adjust a speed of the vehicle according to the speed adjustment.