Leelavijarn, Thossapol, Athip Rojchanasombat, Kornpol Panbura, and Boonsap Witchayangkoon. “An Observation of Traffic Violations at a Crossroad With an Installation of a Patrol Police Officer Model”. Science & Technology Asia 19, no. 2 (1): 82-85. Accessed April 21, 2019. https://www.tci-thaijo.org/index.php/SciTechAsia/article/view/18423.