สีดอกบวบ ภ. The study of the equation of the relationship between the roughness value and skid resistance of the pavement and the study of the equation for the deterioration of the skid resistance in actual use conditions. ncce25 [Internet]. 2020 Jul. 8 [cited 2024 Oct. 26];25:TRL05. Available from: https://conference.thaince.org/index.php/ncce25/article/view/98