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Ade Sjafruddin
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ANALISIS PEMILIHAN MODA BERDASARKAN JADWAL DAN ALOKASI WAKTU AKTIVITAS PILIHAN DALAM SATU HARI Agustien, Melawaty; Sjafruddin, Ade; Lubis, Harun Al Rasyid S.; Wibowo, Sony Sulaksono
Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Vol 2, No 1 (2014): Sustainable Transportation Onfrastructure in Developing Countries
Publisher : FSTPT Indonesia

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Abstract The weakness of mode choice model based on trip-based and tour-based is not paying attention to how the characteristics of the activity  influence the alternative modes used to conduct such activities. Regarding this, the mode choice model in this study based on the activity schedule and the time allocation. The mode choice model for the three alternatives such as private car, private motorcycle and other modes in this study is developed with the multinomial logit choice model based on the utility time allocation model of activity choice in a day. The selection mode is used to conduct the activity choice at the time after returning home from working activities.The result of the empirical analysis shows that the attributes of individuals, families and activities greatly affect the utility of time allocation of activities such as sports, shopping, meetings, entertainment and socialisation. Alternative modes that have greater attributes of utility activity value, shorter travel time, lower travel costs and joint tour have greater chance to be selected. Keywords: Activity time allocation, Activity Timing, Mode choice, Utility time allocation, Multinomial Logit   Abstrak Kelemahan model pemilihan moda berdasarkan trip based dan tour based adalah tidak memperhatikan bagaimana pengaruh karakteristik aktivitas terhadap pilihan moda yang digunakan untuk melakukan aktivitas tersebut. Berdasarkan hal tesebut, model pemilihan moda dalam penelitian ini dibuat berdasarkan  jadwal dan alokasi waktuaktivitas.Model pemilihan moda untuk tiga alternatif pilihan mobil dan motor pribadi serta moda lainnya dikembangkan dengan model pemilihan multinomial logit berdasarkan model utilitas alokasi waktu aktivitas pilihan dalam satu hari.Pemlihan moda digunakan untuk melakukan aktivitas pilihan pada waktusetelah pulang ke rumah dari aktivitas bekerja.Hasil analisis empiris menunjukan atribut individu, keluarga dan aktivitas sangat mempengaruhi utilitas alokasi waktu dari beberapa aktivitas pilihan seperti olah raga, belanja, meeting, hiburan ke mall dan bersosialisasi.Alternatif moda yang mempunyai atribut nilai utilitas aktivitas yang lebih besar, waktu tempuh yang lebih singkat, biaya perjalanan yang lebih rendah dan bersifat joint tour menpunyai peluang yang lebih besar untuk dipilih. Kata Kunci: Alokasi waktu aktivitas, Jadwal waktu aktivitas , Pemilihan Moda, Utilitasalokasi waktu,  Multinomial Logit
PENENTUAN KRITERIA PEMILIHAN PROYEK KERJASAMA PEMERINTAH SWASTA DI BIDANG PERKERETAAPIAN INDONESIA ., Herman; Santosa, Wimpy; Sjafruddin, Ade
Jurnal Transportasi Vol 14, No 1 (2014)
Publisher : Jurnal Transportasi

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Rail transportation is a mass transportation mode which needs high investment. Conventionally railway operation financing comes from government funds. However, the current financing of railway operation can come from the private sector. This is in line with Law No. 23 of 2007 stating that the private sector can play a role in railway operation, there should be a separation between the role of the regulator and the operator, and the elimination of monopoly in railway operations. The railway operations offered to the private sector could be through Public Private Partnership (PPP) scheme, which needs a set of criteria so that the project could benefit the government as well as the private parties. This study aims to develop criteria to be used as the base for decision making in the selection of PPP projects in the field of railways. These criteria are divided into two groups namely Must Criteria (Kriteria Utama) and Want Criteria (Kriteria Tambahan). The data used were obtained from interview involving some respondents The results show that the criteria for the selection of PPP consists of  30 sub-criteria including Must Criteria, 16 sub-criteria including Want Criteria, and 4 sub-criteria that do not belong to any of those groups. Kereta api adalah suatu moda transportasi masal yang penyelenggaraannya memerlukan investasi yang besar. Secara konvensional pembiayaan penyelenggaraan perkeretaapian bersumber dari dana pemerintah. Tetapi saat ini pembiayaan penyelenggaraan perkeretaapian dapat bersumber dari pihak swasta. Hal ini sejalan dengan Undang-Undang No. 23 Tahun 2007, yang menyatakan bahwa swasta dapat berperan dalam penyelenggaraan perkeretaapian serta adanya pemisahan antara peran regulator dan peran operator dan penghapusan monopoli dalam penyelenggaraan perkeretaapian. Penyelenggaraan perkeretaapian yang ditawarkan ke pihak swasta dapat melalui skhema Kerjasama Pemerintah Swasta, yang membutuhkan seperangkat kriteria sehingga kerjasama tersebut dapat menguntungkan pihak pemerintah maupun pihak swasta. Penelitian ini bertujuan mengembangkan kriteria yang menjadi dasar dalam pengambilan keputusan pemilihan proyek Kerjasama Pemerintah Swasta di bidang perkeretaapian. Kriteria-kriteria tersebut dibagi menjadi dua kelompok, yaitu Kriteria Utama dan Kriteria Tambahan. Data yang digunakan diperoleh dari wawancara dengan sejumlah responden. Dari penelitian ini diperoleh kriteria untuk pemilihan proyek KPS adalah 30 subkriteria yang termasuk kelompok Kriteria Utama, 16 subkriteria yang termasuk kelompok Kriteria Tambahan, dan 4 subkriteria yang tidak termasuk keduanya yang dapat digunakan sebagai kriteria pemilihan proyek Kerjasama Pemerintah Swasta.
PERAN JALAN ALTERNATIF DAN ANALISIS TRANSPORTASI BARANG PASCATSUNAMI DI PROPINSI NANGGROE ACEH DARUSSALAM Saleh, Sofyan M.; Tamin, Ofyar Z.; Sjafruddin, Ade
Jurnal Transportasi Vol 6, No 2 (2006)
Publisher : Jurnal Transportasi

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Abstrak Transportasi (pergerakan) barang adalah perpindahan barang yang terjadi baik di dalam suatu zona maupun antar zona dalam satuan waktu tertentu. Analisis besarnya perpindahan dapat dilakukan dengan model bangkitan/tarikan antar zona yang merupakan salah satu tahapan dalam proses model empat tahap perencanaan transportasi. Besarnya pergerakan tersebut dapat direpresentasikan dengan Matriks Asal -Tujuan (MAT) ataupun dengan diagram garis keinginan (desire line). Dalam kajian ini diambil kasus transportasi barang di Provinsi Nanggroe Aceh Darussalam (NAD) dimana hampir 95% pergerakan barang dilakukan dengan moda darat (jalan raya), walaupun sebagian besar wilayah NAD berada pada daerah pesisir dimana pergerakan tersebut dapat dilakukan dengan moda laut, namun karena kurangnya prasarana dan sarana maka pergerakan lewat jalan raya tetap menjadi pilihan karena lebih efisien. Pergerakan barang melalui jalan darat di NAD mempunyai kendala geografis daerah akibat minimnya jaringan jalan antar zona. Beberapa ruas jalan telah dan sedang dalam peningkatan, diantaranya adalah ruas jalan Ladia Galaska, dan ruas Geumpang – Tutut. Dalam proses peningkatan kedua ruas jalan tersebut penuh dengan tantangan dan kecaman dari beberapa LSM terutama mengenai isu dampak lingkungan. Namun akibat gempa bumi dan badai tsunami, pola pergerakan berubah secara drastis, banyaknya jaringan jalan yang putus.  Ruas jalan yang tadinya ditentang kini menjadi tumpuan utama dalam distribusi logistik. Untuk itu pada tulisan ini dianalisis distribusi pergerakan barang antar zona sebelum tsunami, dan pasca tsunami, dengan menggunakan model gravity. Hasil analisis menunjukkan bahwa terjadi penurunan pergerakan cukup signifikan antar zona pada beberapa zona pasca tsunami hingga masa rekonstruksi.Kata-kata kunci: Transportasi barang, Jalan Alternatif, Tsunami, Matrik Asal – Tujuan ,model gravity.
STRATEGI PENINGKATAN PANGSA PASAR ANGKUTAN UMUM DI KOTA SURAKARTA Budiarto, Arif; Sjafruddin, Ade; Santoso, Idwan; Alrasyid Sorah Lubis, Harun
Jurnal Transportasi Vol 10, No 3 (2010)
Publisher : Jurnal Transportasi

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Abstract

An important problem in urban areas is traffic congestion that occurs on the road network during the day. One cause of this problem is the high number of private car usage with low occupancy levels while public transport services are under-utilized, although the use of public transport is more efficient than that of private cars. Therefore, efforts to increase public transport use are needed to reduce transportation problems, such as traffic congestion. Mode choice is one important step in transportation modeling because this stage provides information necessary to evaluate the condition of the transportation network, including traffic congestion in the network. This model aims to determine the individual attributes and modes, which influence in selecting a mode among available modes, using the utility function parameters. Sensitivity of mode choice can be seen through the sign and magnitude of the parameters contained in this model. In this study, a simulation was conducted with a purpose to increase the market share of public transport in the City of Surakarta.Keywords: mode choice, utility function, public transport
MODEL PEMILIHAN MODA ATAS PELAYANAN MONOREL JAKARTA BERDASARKAN DATA STATED PREFERENCE (SP) Sjafruddin, Ade; Haryoyudanto, Apriadi; Wirahadikusumah, Reini D.; Amalia, Nina
Jurnal Transportasi Vol 8, No 2 (2008)
Publisher : Jurnal Transportasi

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Abstract The need for mass transportation urges the government of Jakarta to build a monorail system. Monorail will increase the capacity of  public transportation system and give a new color to the urban transportation services. Users will have an additional mode choice and then make their preferences. User’s behaviour when choosing mode can be modeled using Stated Preference data. By using Stated Preference, monorail can be compared objectively to existing modes, namely private car, AC bus, non-AC bus, and busway using specific service attributes. Attributes used in this study are journey time, fare, frequency of departure, delay, and walking time to station. Stated Preference data were obtained from a survey to prospective passengers in the service area of the Green Line monorail corridor. Binary logit models were employed to model mode choices and the utility function was in a linear form. Calibration was done by multiple linear regression. Four mode choice models were then obtained, namely monorail versus private car model, monorail versus AC bus model, monorail versus non-AC bus model and monorail versus busway model. Keywords:  monorail, mode choice, service attribute, Stated Preference (SP) 
PEMILIHAN MODA ANGKUTAN PENUMPANG PERKOTAAN BERBASIS AKTIVITAS Budiarto, Arif; Sjafruddin, Ade
Jurnal Transportasi Vol 7, No 2 (2007)
Publisher : Jurnal Transportasi

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Abstract

Abstract Traveling decision was part of activity scheduling process which to be basis of activity demand modeling. In activity-based modeling, traveling was defined as movement with sequential process concentrating to through segments starting from home and back to home which more realistic than old model, trip based which used by four stages model. Using this approach model, the transport passenger modal split which was usually done by the people are analyzed in order to answer why recently the use of motorcycle was increased in number. The proportion of motorcycle which was increased  in composition of roadway traffic reflect to the condition of modal split which done by the people from the available mode.  Modal split was conditional decision on choosing decision in previous level, i.e. pattern of acitivity, time of the day, destintion and number of stop. The results of this study was expected to provide detail description of variables which were very influence to transportation modal split process.Keywords: mode choice, activity-based
SENSITIVITY ANALYSIS OF TRANSPORTATION PRODUCTION COSTS IN INDONESIA Sjafruddin, Ade; Armijaya, Henry; Rahardjo, Agung; Munandar, Ari Sarif
Jurnal Transportasi Vol 8, No 1 (2008)
Publisher : Jurnal Transportasi

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Abstract

Abstract The transportation production cost (TPC) considerably has strong influence to the national economic condition. This paper focused on the analysis of the transportation production cost sensitivity in relation to the variation of the external affecting factor, which are fuel price, rupiah exchange rate and Bank of Indonesia interest rate. Based on the R2 values, the TPC components in general have significant correlation, with the fuel prices. However, they do not have high correlation to the fluctuation of interest rate and rupiah exchange rate. The sensitivity analysis shows that a 10% rise on fuel price would cause 6%, 2%, 7%, 2.4%, and 4.9% rise on the TPC of intercity bus, ferry ship, interisland ship, train, and airline, respectively.Keywords: sensitivity analysis, transportation production cost, external affecting factor.
PENGARUH MUATAN TRUK BERLEBIH TERHADAP BIAYA PEMELIHARAAN JALAN M. Saleh, Sofyan; Z. Tamin, Ofyar; Sjafruddin, Ade; Bona Frazila, Russ
Jurnal Transportasi Vol 9, No 1 (2009)
Publisher : Jurnal Transportasi

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Abstract

More than 90% of freight movement in Indonesia is carried out by land transportation (mostly highway mode). Meanwhile most nation land is surrounded by water, in which the movement could have been carried out by sea transportation. There are rail network in Java Island and some parts of Sumatera Island where multimodal/inter-modality system can be applied. However, lack of sea and rail transportation infrastructure and management makes highway mode the main choice among other transportation modes. This study investigated the impact of overloading trucks in the freight transportation system in Indonesia, because the government still allows trucks to carry up to 50% of the normal maximum load. This policy has greatinfluence on road deterioration, creating the vehicle damage factor approximately 5 times higher than that of the normal one. This overloading has a big impact on the maintenance of the road and will increase themaintenance budget.
PENGARUH ALOKASI WAKTU TERHADAP PERILAKU PERJALANAN RUMAH TANGGA PENGGUNA SEPEDA MOTOR DI PUSAT KOTA SEMARANG Manullang, Okto Risdianto; Syabri, Ibnu; Tamin, Ofyar Z.; Sjafruddin, Ade
Jurnal Transportasi Vol 14, No 1 (2014)
Publisher : Jurnal Transportasi

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Abstract

Downtown area is the area that located in the central of a city with a relatively close distance to the location of the activity and existing facilities and it is served by public transportation service, so that the number of private vehicles uses can be reduced. However, those conditions are not found in the downtown area of Semarang, where the number of motorcycle uses is high. That phenomenon needs to be observed from household scale as the main actors of trips. This study aims to investigate motor cycle travel behavior of households living in the downtowns area of Semarang. Based on the results it is found that husband and wife have different travel behavior along with their role in the household. Husbands have more trips related to work activities while wives have more trips related to household activities. Moreover, household travel behavior is different during weekdays and weekend. Variable which has the most influence on travel behavior in weekdays is daily activity that is accompany family members, while variables which have the most influence on travel behavior in weekend are non-daily activities such as recreation and visiting relatives. Pusat kota adalah kawasan yang menempati lokasi sentral dengan jarak relatif dekat dengan lokasi aktivitas serta fasilitas yang ada dan dapat diakses dengan jaringan pelayanan angkutan umum sehingga angka penggunaan kendaraan pribadi, khususnya bagi penduduk yang tinggal di dalamnya, dapat dikurangi. Namun kondisi tersebut tidak terjadi di pusat Kota Semarang karena angka penggunaan sepeda motor di sini cenderung tinggi. Fenomena tersebut perlu dicermati pada skala paling kecil, yaitu rumah tangga sebagai pelaku utama pergerakan. Tujuan penelitian ini adalah melakukan analisis perilaku perjalanan rumah tangga pengguna sepeda motor yang tinggal di kawasan pusat Kota Semarang. Berdasarkan hasil analisis diketahui bahwa pasangan suami dan istri memiliki perilaku perjalanan yang berbeda dalam melakukan aktivitas rumah tangga. Pergerakan suami lebih banyak dilakukan untuk kegiatan bekerja sedangkan istri lebih banyak berperan dalam aktivitas rumah tangga. Selain itu perilaku perjalanan rumah tangga pada hari kerja dan pada akhir pekan juga berbeda. Variabel yang paling mempengaruhi perilaku perjalanan pada hari kerja adalah aktivitas harian, yaitu mengantar anggota keluarga, sedangkan variable yang paling mempengaruhi pada akhir pekan adalah aktivitas non-harian, seperti rekreasi, jalan-jalan dan mengunjungi kerabat.
MODEL PERILAKU MAHASISWA PENGGUNA MOBIL KE KAMPUS BERDASARKAN THEORY OF PLANNED BEHAVIOR Setiawan, Rudy; Santosa, Wimpy; Sjafruddin, Ade
Jurnal Transportasi Vol 13, No 3 (2013)
Publisher : Jurnal Transportasi

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The most common daily trip for students is the commute to and from campus. Though there are clear environmental, economic, and social drawback from using private vehicles for these trips, students still choose private vehicles to get to campus. This study reports an investigation of psychological factors influencing students’ behavior to commute by car from the perspective of the Theory of Planned Behavior (TPB). Students from three different university campuses (sample size of 312) completed a survey on their car commuting behavior. Results indicated that all relations postulated by the TPB are confirmed and perceived behavioral control was the strongest factor that influences students’ intention. Attitude, subjective norm, and perceived behavioral control explain 59% variance of the intention while intention explains 58% of the variance of the actual car use. Implications of these findings are that in order to alter the use of car, interventions should target the perceived behavioral control of commuting by car.
Co-Authors Agung Rahardjo, Agung Aine Kusumawati Apriadi Haryoyudanto, Apriadi Ari Sarif Munandar, Ari Sarif Arif Budiarto Bambang Setiawan Elsa Tri Mukti Febri Zukhruf Ferry Rusgiyarto Frazilla, Russ Bona Harun Al Rasyid S. Lubis, Harun Al Rasyid S. Harun Al Rasyid Sorah Lubis, Harun Al Rasyid Sorah Harun Alrasyid Sorah Lubis Henry Armijaya, Henry Herman . Ibnu Syabri Idwan Santoso Melawaty Agustien, Melawaty Nina Amalia, Nina Ofyar Z. Tamin Ofyar Z. Tamin Okto Risdianto Manullang Reini D. Wirahadikusumah, Reini D. Rudy Setiawan Russ Bona Frazila Sad Marga Oetomo, Sad Marga Sofyan M. Saleh Sofyan M. Saleh Sony Sulaksono Wibowo, Sony Sulaksono Suprayogi . Wicaksono, Gunawan Wimpy Santosa