Seflers, Maris, Juris Kreicbergs, and Gernot Sauter. “Equipment Condition for Zebra Crossing Night-Time Safety Performance in Latvia”. The Baltic Journal of Road and Bridge Engineering 16, no. 4 (December 28, 2021): 108–125. Accessed June 13, 2024. https://bjrbe-journals.rtu.lv/bjrbe/article/view/bjrbe.2021-16.541.