The growing prominence of energy shortages and environmental challenges has intensified global attention toward renewable energy utilization, with an urgent demand for energy transition in the transportation sector. Roads, as one of the important transportation infrastructures, contain a large amount of utilizable mechanical energy, and their energy harvesting technology is currently one of the hotspots in research.This study presents a comprehensive review of road mechanical energy harvesting technologies. First, three categories of road mechanical energy harvesting systems suitable for diffe...