Hamid, F. Z., and S. M. B. “The Development of GIS Database for Blackspot Accident Area Affected by Day And Night Time”. Recent Trends in Civil Engineering and Built Environment, vol. 2, no. 1, May 2021, pp. 122-31, https://publisher.uthm.edu.my/periodicals/index.php/rtcebe/article/view/1408.