How piezoelectricity works on roads?

Piezoelectricity on roads utilizes materials that generate electric charge when subjected to mechanical stress, such as the pressure from vehicles driving over them. These materials, often embedded in road surfaces, convert the kinetic energy of moving vehicles into electrical energy. This harvested energy can be used to power streetlights, traffic signals, or other infrastructure, contributing to energy efficiency and sustainability in urban environments. By integrating piezoelectric materials into roads, cities can harness otherwise wasted energy from daily traffic.