Advances in information and wireless communication technologies had a significant impact on emerging applications in the 4-th industrial revolution, including the advanced application of Intelligent Transportation Systems (ITS). ITS is the union of information and communication technologies and aims to provide innovative services relating to the fields of road transportation, infrastructure, traffic management, and mobility management. In this project UAVs integrated with the remote sensing technology of LiDAR sensors can provide accurate and real-time traffic information to an ITS. The goal is to determine the optimal 3D placement of the UAV-LiDAR system in an urban road environment such that the placement maximizes the efficiency of the UAV-LiDAR system.