Analysis Effect of Side Frictions against Vehicles Speed at Ahmad Yani Street Kupang City Using the MKJI and PKJI Formulation Approach

Traffic congestion in urban areas has become a national problem in Indonesia, as well as Kupang City, especially on the Ahmad Yani Street. On this road there are commercial activities such as shops, shopping centers and there are also favorite schools on this road so traffic congestion is difficult to avoid. One of the triggers of traffic congestion is side frictions, where parking vehicles are increasing, vehicles are in/out, vehicles are slow and pedestrians are crossing the road which causes a decrease in vehicle speed so that time is wasted on roads. However, how the influence of side frictions against vehicle speed has not been formulated through mathematical models, so this research is needed. The aim of this research was to determine the road performance of existing conditions and find models of the effect of side frictions against vehicle speed, especially on the Ahmad Yani Street, Kupang City. To achieve this aim, the primary data collection method uses observations through traffic surveys while the data analysis method uses MKJI and PKJI formulations which are coupled with regression analysis. The results showed that the regression equation model of the effect of side frictions against the average speed of the vehicle with the MKJI 1997 formulation was y = 19,228-0.0369x. The regression equation model of the effect of side frictions against the average speed of the vehicle using the 2014 PKJI formulation is y = 19.472-0.0431x