Skid Resistance Performance of Asphalt Pavements: A Study of Temperature and Weather Influence on Traffic Safety Risks

Politeknik Keselamatan Transportasi Jalan, Tegal, Indonesia

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Abstract

Skid resistance on asphalt surfaces is the most effective means to prevent vehicle skidding and improve traffic safety during driving. The principal problem identified is that, when wet, the tires lose traction on the road surface, heightening the risk of skidding and resulting in several accidents. To explore the effect of temperature and weather on skid resistance and the correlation between skid resistance and the number of accidents. The research was conducted on the Yomani-Guci road section in Tegal Regency, Indonesia, using the T2GO friction tester, and the data were statistically analyzed in RStudio. The research results indicate that weather has a strong negative correlation of -0.40 with skid resistance. The power model was identified as the best model for describing the correlation between the number of accidents and skid resistance values. When the skid resistance value is up to 0.5, the accident frequency remains relatively high, but it begins to decrease significantly once it reaches 1. When compared with the Indonesian technical standard, which sets a minimum threshold of 0.33, these findings indicate that this threshold does not yet fully reflect the actual level of safety under field conditions. The findings have important implications for civil engineering, underlining the need for regular assessment of road functional conditions, particularly in regions with high temperatures and high rainfall, to reduce accidents and improve traffic safety.