The Volpe Center evaluated the long-term effectiveness of the use of photo enforcement for driver education at the East Princeton Street grade crossing in Orlando, FL (Crossing ID 622173H). The goal of the photo enforcement-based driver education program is to reduce the number of vehicles that commit grade crossing warning device violations, thus reducing the possibility of getting struck by an oncoming train. A before-and-after design was used to evaluate the effectiveness of the photo enforcement program on drivers’ compliance of the grade crossing warning devices. Grade crossing warning device violations were collected for 14 continuous days before the implementation of the photo enforcement program from April 14, 2016 to April 27, 2016. The signage and photo enforcement system were installed on August 8, 2016, and the city of Orlando started issuing violation notices on August 11, 2016. Twenty months after the implementation of the photo enforcement system, grade crossing warning device violations were then again collected for 14 continuous days from April 12, 2018 to April 25, 2018. The average hourly rate of violations per activation decreased from 6.0296 before to 4.9916, resulting in a 17.2 percent reduction, after the photo enforcement program was implemented.