Jakarta-Bogor-Depok-Tangerang- Bekasi): an Urban Ecology Analysis
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2nd International Conference on Electrical, Electronics and Civil Engineering (ICEECE'2012) Singapore April 28-29, 2012 Transport Mode Choice by Land Transport Users in Jabodetabek (Jakarta-Bogor-Depok-Tangerang- Bekasi): An Urban Ecology Analysis Sutanto Soehodho, Fitria Rahadiani, Komarudin bus-way, monorail, and Waterway [16]. However, these Abstract—Understanding the transport behaviour can be used to solutions are still relatively less effective to reduce the well understand a transport system. Adapting a behaviour approach, congestion. This is because of the preferences that are more the ecological model, to analyse transport behaviour is important private vehicles- oriented than public transport-oriented. because the ecological factors influence individual behaviour. DKI Additionally, the development of an integrated transportation Jakarta (the main city in Indonesia) which has a complex system in Jakarta is still not adequate to cope with the transportation problem should need the urban ecology analysis. The problem. research will focus on adapting an urban ecology approach to analyse the transport behaviour of people in Jakarta and the areas nearby. The Understanding the transport behaviour can be used to well research aims to empirically evaluate individual, socio-cultural, and understand a transport system. Some research done in the environmental factors, such as age, sex, job, salary/income, developed countries has used the behaviour approach to education level, vehicle ownership, number and structure of family encourage changes in behaviour to be more sustainable such members, marriage status, accessibility, connectivity, and traffic, as the use of public transport, cycling, and walking as a mode which influence individuals’ decision making to choose transport of transportation (to be described in the literature review). modes. The main finding is that the three-level of ecological Adapting the ecological models approach is important because perspective in analysing transport behaviour cannot fully be applied the ecological factors determine individual behaviour ([13]; in Greater Jakarta as a busiest city in Indonesia. The only two-level [22]; [20]; [18]; [25]). Also, reference [7] uses this ecological perspective that may explain the behaviour was the individual and approach to develop a model that explains the relationship social factors. The environmental factors may contribute only a small proportion to someone decision to select the land transport mode in between the economic status (socio-economic status / SES) Greater Jakarta. Some factors that have greater proportion are sex, with the behaviour of walking as a mode of transport. household income, and the number of vehicles owned. Meanwhile, DKI Jakarta is an urban area that requires intervention to the environment accessibility, connectivity and traffic variable had address the problem of transportation. The analysis of urban the lowest accuracy values. ecology enables decision makers to make interventions that are considered to be important for the development of Keywords—urban transport, urban ecology, individual factor, transportation systems. This research will focus on the social factor, environmental factor, transport mode choice. application of urban ecology approach to analyse the transport behaviour of the citizens of Jakarta and its surrounding areas. I. INTRODUCTION This research aims to prove the factors of individual, social, RANSPORTATION problem in Jakarta is complicated. cultural and environmental (details described in the literature T Based on data from reference [4], the number commuters review of factors) that influence the decision to choose the in Indonesia have reached 7.6 million people. In Jakarta, mode of transport in DKI Jakarta and surrounding areas about 78.4% employees use personal vehicles, cars or (Greater Jakarta). motorcycles [17], so that there are about 5 million vehicles The information gaps about what factors influence the come into and stay in Jakarta every morning [16]. The result behaviour of road transport users to choose a specific is, more and more traffic congestion in the Greater Jakarta transport mode will limit the understanding of the behavioural (Jabodetabek or Jakarta-Bogor-Depok-Tangerang-Bekasi) tendencies. Thus, the intervention will also be less than every day. optimal. The research is expected to provide inputs for the An improvement of transportation system has begun in manager and person in charge of transportation in DKI Jakarta Jakarta. The solution is through the development of Macro and surrounding areas for the development of transportation Transportation Pattern (Pola Transportasi Makro) of subway, systems in the future. Furthermore, with an improved transportation system, quality of life of people in Greater Jakarta will increase as well. Sutanto Soehodho is with Department of Civil Engineering, The University This research aims to prove the factors of individual, social, of Indonesia. Fitria Rahadiani is with Department of Management, The University of cultural and environmental (details described in the literature Indonesia. review of factors) that influence the decision to choose the Komarudin is with Department of Industrial Engineering at The University of Indonesia. 177 2nd International Conference on Electrical, Electronics and Civil Engineering (ICEECE'2012) Singapore April 28-29, 2012 mode of transport in DKI Jakarta and surrounding areas Thus, here are the hypotheses to be tested through this (Greater Jakarta). research: The information gaps about what factors influence the Hypothesis 1 (H1): Age influence the decision to select the behaviour of road transport users to choose a specific mode of land transport transport mode will limit the understanding of the behavioural Hypothesis 2 (H2): Gender influence the decision to select tendencies. Thus, the intervention will also be less than the mode of land transport optimal. The research is expected to provide inputs for the Hypothesis 3 (H3): Job/employment influence the decision to manager and person in charge of transportation in DKI Jakarta select the mode of land transport and surrounding areas for the development of transportation Hypothesis 4 (H4): Income/salary influence the decision to systems in the future. Furthermore, with an improved select the mode of land transport transportation system, quality of life of people in Greater Hypothesis 5 (H5): The level of education influence the Jakarta will increase as well. decision to select the mode of land transport Hypothesis 6 (H6): Number of vehicles owned effect on decision-making to select the mode of land transport II. RESEARCH METHODOLOGY Hypothesis 7 (H7): The number of person in a household This study used primary data by using a research instrument influence the decision to select the mode of land transport of questionnaires (travel survey) with a design that adapts the Hypothesis 8 (H8): Marital status influence the decision to KONTIV-design [6] with a participant from the Greater select the mode of land transport Jakarta area. For the primary data, the sampling method was Hypothesis 9 (H9): Environment accessibility influence the stratified-cluster sampling. Each city/municipality in the decision to select modes of land transport Greater Jakarta area, namely North Jakarta, South Jakarta, Hypothesis 10 (H10): Connectivity influence the decision to East Jakarta, West Jakarta, Central Jakarta, Tangerang, select the mode of land transport Bekasi, Depok, and Bogor, sampled as many as 14 Hypothesis 11 (H11): Traffic influence the decision to select individuals/samples per location. Samples were also stratified the mode of land transport according to economic status [7], the middle class and lower- upper. In accordance with KONTIV design [6], surveys Meanwhile, this research used the revealed preferences conducted for 1 person (mostly often travel in the household) diary system because it lets users record the actual events on per travel day. The travel day was randomly selected for each the determined travel day. From 126 respondents gathered, it person. So the sample size was 126 (or 126 days for the time was found 475 trips data. However, there are 95 travel data of the survey.) that can not be used because of incompleteness. Thus, the The survey form designed to be consisted of 1 form a completed travel data in the study was only 380 data. With travel diary and 1 form of household information. The factors 380 trips and 13 data variables to be studied, the ratio of studied are shown in Table 1. variable-data was 1: 29.23. This ratio is considered to be adequate to conduct the research. TABLE 1 To analyse the relationship between the variables with the THE FACTORS IN URBAN ECOLOGY MODEL PROPOSED mode choice, this study used two methods, namely Neural Networks (NN) [10] and Support Vector Machine (SVM) Factor References [11]. Both methods use the n-fold cross validation to eliminate Individual Factors the dependency of data with the other data. In addition, testing for repeated NN for 10 times was to eliminate the influence of Age [8]; [21]; [24] no randomisation in the calculation and see the average of Sex [8]; [21]; [24] each method performance. Job [8]; [2]; [24] Factors that were considered to have an influence on the Income / Salary [2]; [7] selection of land transport modes were treated as feature vectors. Meanwhile, the types of land transport mode Level of education [8]; [21]; [2]; [24]; [23]; [7] represent the type of cluster. The accuracy of the model Social