Dewi Handayani

Logit and probit model in toll sensitivity analysis of Solo-Ngawi, Kartasura-Palang Joglo segment based on Willingness to Pay (WTP)

Solo-Ngawi toll road project is part of the mega project of the Trans Java toll road development initiated by the government and is still under construction until now. PT Solo Ngawi Jaya (SNJ) as the Solo-Ngawi toll management company needs to determine the toll fare that is in accordance with the business plan. The determination of appropriate toll rates will affect progress in regional economic sustainability and decrease the traffic congestion. These policy instruments is crucial for achieving environmentally sustainable transport. Therefore, the objective of this research is to find out how the toll fare sensitivity of Solo-Ngawi toll road based on Willingness To Pay (WTP). Primary data was obtained by distributing stated preference questionnaires to four wheeled vehicle users in Kartasura-Palang Joglo artery road segment. Further data obtained will be analysed with logit and probit model. Based on the analysis, it is found that the effect of fare change on the amount of WTP on the binomial logit model is more sensitive than the probit model on the same travel conditions. The range of tariff change against values of WTP on the binomial logit model is 20% greater than the range of values in the probit model . On the other hand, the probability results of the binomial logit model and the binary probit have no significant difference (less than 1%).

Characteristics of Freight Transport Parking and Infrastructures Facilities of Sustainable Primary Arterial Road (A Case Study of Surakarta Ring Road - Central Java - Indonesia)

Freight transport parking on the sides of primary arterial roads directly declines road service function and indirectly increases cost which must be borne by road users due to reduced speed. Changes of land use, aesthetic value due to increased local activities are the continued impacts which must be faced. Provision of road infrastructure facilities such as rest area or freight transport terminals is a solution to solve parking on primary arterial roads. So that the implementation of the solution is optimum, the concept planning must consider the principle of sustainable transportation. The principle of sustainable transportation is finding short-term and long term solutions in various aspectsto improve efficient transportation system.Therefore, it’s important to determine the characteristics of truck parking to recommend appropriate infrastructure facilities.