Time Headway Modelling of Motorcycle-Dominated Traffic to Analyse Traffic Safety Performance and Road Link Capacity of Single Carriageways
Abstract: This study aims to
develop time headway distribution models to analyse traffic safety performance
and road link capacities for motorcycle-dominated traffic in Denpasar, Bali.
Three road links selected as the case study are Jl. Hayam Wuruk, Jl.Hang Tuah,
and Jl. Padma. Data analysis showed that between 55%-80% of motorists in Denpasar
during morning and evening peak hours paid less attention to the safe distance
with the vehicles in front. The study found that Lognormal distribution models
are best to fit time headway data during morning peak hours while either
Weibull (3P) or Pearson III distributions is for evening peak hours. Road link
capacities for mixed traffic predominantly motorcycles are apparently affected
by the behaviour of motorists in keeping safe distance with the vehicles in
front. Theoretical road link capacities for Jl. Hayam Wuruk, Jl. Hang Tuah and
Jl. Padma are 3,186 vehicles/hour, 3,077 vehicles/hour and 1935 vehicles/hour
respectively.
Penulis: D. M. Priyantha
Wedagama
Kode Jurnal: jptsipildd170229
