Zogo Tsala Simon Armand et al. 2021. Categorization of Road Accidents Related to the Default of Signaling: A Case Study of the Yaoundé-Douala Highway, Southern Cameroon. New Approaches in Engineering Research Vol. 12. (Sep. 2021), 156–179. DOI:https://doi.org/10.9734/bpi/naer/v12/5551D.