To document the research that has been done in this area, this paper conducts a thorough review of existing studies while also highlighting areas where more research is required. In fact, for some roadway design elements, attempts to extract those elements from LiDAR have been extremely scarce. Although extracting roadway features from LiDAR has been considered in previous research, the extraction of some features has received more attention than others. Nonetheless, extracting semantic information from LiDAR datasets can be extremely challenging. The high accuracy of LiDAR datasets and the efficiency by which they can be collected has led many transportation agencies to consider mobile LiDAR as an alternative to conventional tools when surveying roadway infrastructure. Interest in using Light Detection and Ranging (LiDAR) technology in Transportation Engineering has grown over the past decade.
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