Piezoelectric materials play a prominent role in the energy harvesting of environmental fluctuations and have attracted much attention in recent years. Passing vehicles create stresses on the road surfaces which may be converted to electrical energy by using piezoelectric transducers, mounted under the surface of the roads. In this project, loads on the road surface are considered as dynamic loads when the cars are passed on its surface. Then, by using finite element analysis in Abaqus, simulation of a piezoelectric transducer called cymbal is carried out and electric potential energy and displacement of the road surface are analyzed. In simulations, in two cases, are performed and the displacement difference are obtained in these two states, using the percent displacement percentage ratio, which is one of the geometric design criteria in optimization. Another criterion is the maximum energy recovery from the electrical potential of the cymbal transducer. The effect of different parameters of the piezoelectric transducer geometry on the potential energy is investigated and optimized geometry is obtained. The maximum potential energy in the optimized size of the embedded converter is found to be 15.96 mJ, and if the car frequency is 50 Hz, the maximum output power can be 798 mW. Finally, the effect of vehicle speed and tire pressures, in optimal geometry design, were evaluated which indicated that with increasing the speed and weight of the car, the potential electrical energy increased significantly. Keywords: Piezoelectric, Cymbal transducer, Energy harvesting, Asphalt pavement