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POTENSI PENGGUNAAN ANGKUTAN INFORMAL DI KOTA BANDUNG Bahar, Taslim; Kusbiantoro, B.S.; Z. Tamin, Ofyar; Bona Frazila, Russ
Jurnal Transportasi Vol 11, No 3 (2011)
Publisher : Jurnal Transportasi

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Limited size of the road dimension in an area could prevent formal public transport (four-wheeled vehicles) to serve the area. This condition led to the rise of public transport alternatives, such as motorcycle ojek, with flexible routes and rates. Currently, their operation and service tend to increase in many cities in Indonesia. This study aims to determine the potential use of ojek as an alternative to public transport in urban areas.Analyses were performed using the causal relationship between services quality factors with the satisfaction and loyalty of users, using the Structural Equation Modeling (SEM) method. The results showed that more than 70% of users who will continue to use motorcycle ojek for a long time, especially in suburban areas, and about 30% are likely to switch to alternative modes, especially users with the end destination of employment.Keywords: motorcycle-ojek, user satisfaction, user loyalty.

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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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.

KEBIJAKAN SISTEM TRANSPORTASI BARANG MULTIMODA DI PROVINSI NANGGROE ACEH DARUSSALAM M. Saleh, Sofyan; Sjafruddin, Ade; Z. Tamin, Ofyar; Bona Frazila, Russ
Jurnal Transportasi Vol 10, No 1 (2010)
Publisher : Jurnal Transportasi

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More than 95% of freight movement in the Province of Aceh is done by the road mode. As most of the land in the province is surrounded by sea, the freight movement could have been done by sea transportation. Railway was already in the Province of Aceh long time ago, it began to operate in 1906, but the operation was closed in 1982. The Central Government and the Aceh Provincial Government want to revitalize the railway and there is also a plan to build a new Jalan Raya from Banda Aceh to North Sumatra border. However, there is a constraint in the costs of building these infrastructures so that multimodal and intermodal transportation can not take place. As a result, road transportation remains to be a major transport choice and this condition is even worse with vehicles on the road also tend to carry overload. This study was conducted in connection with the overload effect of the freight transport using trucks and how these trucks cause road deterioration and increase road maintenance costs in the Province of Aceh. The results suggest that multimodal/intermodal freight transportation, specifically road and railroad combined transport, could provide more efficient freight transport and, most likely, is the best option for the province.Keywords: freight transportation, multimodal/intermodal transportation, overload

MODEL PEMILIHAN RUTE DAN PEMBEBANAN PERJALANAN DENGAN SISTEM FUZZY Cahyo Kresnanto, Nindyo; Z. Tamin, Ofyar; Bona Frazila, Russ
Jurnal Transportasi Vol 9, No 2 (2009)
Publisher : Jurnal Transportasi

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Route selection is a major element of the network assignment model. This process is often also callednetwork tree building. In conventional route selection, each repetition will only produce one best path orshortestpath. Using fuzzy systems approach, travel cost is modeled in fuzzy numbers. Fuzzy numbers arenumbers with certain upper-bound and under-bound limits. In fuzzy conditions, route selection process isexpected to produce several routes that can be nominated as the shortestpath. It means that in each repetition,the finding algorithm will generate more than one best route, starting from the first best route, the second bestroute, to the k best route. The next process is the trip assignment existing (demand side) on the transportationnetwork system (supply side) which will produce a route pattern and traffic flow. Traffic flow allocationbased on the series of best routes and degree of membership of fuzzy numbers.Keywords: fuzzy travel cost, fuzzy shortest path, fuzzy assignment

EFEKTIVITAS JALUR SEPEDA MOTOR PADA JALAN PERKOTAAN MENGGUNAKAN MODEL SIMULASI-MIKRO Zukhruf, Febri; Bona Frazila, Russ; Wibowo, Sony S .
Jurnal Transportasi Vol 10, No 1 (2010)
Publisher : Jurnal Transportasi

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The Growth of motorcycles in Indonesia creates high proportion of motorcycles on traffic flow. This high proportion, which is very dominant, creates some traffic problems, including traffic jam dan traffic accidents. There are several methods available to solve the problems; for example providing motorcycle lane and slow lane for the movement of motorcycles. The purpose of this study is to determine the effectiveness of motorcycle lane and slow lane using microsimulation model. The results show that the microsimulation model can only be used for road sections with the average motor cycle speed less than 40 km per hour.Keywords: high proportion of motorcycle, microsimulation, motorcycle lane, slow lane

Pengembangan Model Prediksi Kecelakaan Lalu Lintas pada Jalan Tol Purbaleunyi Rakhmat, Lucky Aquita; Kusumawati, Aine; Frazila, Russ Bona; Hendarto, Sri
Jurnal Teknik Sipil Vol 19, No 3 (2012)
Publisher : Institut Teknologi Bandung

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Abstrak. Kondisi keselamatan lalu lintas jalan di Indonesia masih belum baik, kecelakaan lalu lintas masih sering terjadi dan memakan banyak korban jiwa. Salah satu upaya mendasar yang diperlukan untuk meningkatkan kondisi keselamatan lalu lintas jalan adalah dengan cara mengembangkan model prediksi kecelakaan. Model ini menghubungkan frekuensi kecelakaan yang terjadi pada suatu entitas jalan dengan arus lalu lintas dan berbagai faktor lingkungan jalan yang berkontribusi pada terjadinya kecelakaan. Kegunaan model ini adalah untuk mengestimasi dan memprediksi keselamatan suatu entitas jalan, mengidentifikasi lokasi-lokasi jalan berbahaya, dan juga untuk mengevaluasi keefektifan penerapan program penanganan lokasi berbahaya. Makalah ini menyajikan model prediksi kecelakaan pada ruas jalan tol Purwakarta-Bandung-Cileunyi (Purbaleunyi) yang dibangun dengan membandingkan kinerja statistik dari model regresi Poisson, Negatif Binomial (NB), Zero-Inflated Poisson (ZIP), dan Zero-Inflated Negative Binomial (ZINB). Hasil pemodelan mengindikasikan model regresi NB adalah model yang terbaik. Berdasarkan model yang dibangun, frekuensi kecelakaan berkorelasi positif dengan lintas harian rata-rata tahunan, derajat kelengkungan, dan keberadaan median yang tingginya kurang dari 1,75 m dan lebarnya kurang dari 2,5 m. Model yang dibangun kemudian diaplikasikan untuk melakukan identifikasi dan pemeringkatan segmen jalan berbahaya. Hasilnya menunjukkan bahwa KM 92-93 (arah Cileunyi) merupakan segmen yang paling berbahaya pada jalan tol Purbaleunyi. Abstract. Road traffic safety condition in Indonesia still needs improvement that road traffic accidents occur frequently and cause many people died. One way to improve road safety is by developing accident prediction model. The model relates accident frequencies with traffic flow and various roadway geometric/environment characteristics contributing to accident occurrences. The model is useful to estimate and predict safety of a road entity, identify hazardous road locations, and also to evaluate treatment effectiveness applied on hazardous road locations. This paper presents the accident prediction model for Purwakarta-Bandung-Cileunyi (Purbaleunyi) toll road. The model was developed by comparing statistical performances of Poisson, Negatif Binomial (NB), Zero- Inflated Poisson (ZIP), dan Zero-Inflated Negative Binomial (ZINB) regression models. The modeling result indicates that the model which is developed using the NB regression model is the best. Based on the developed model, the accident frequency has positivie correlations with annual average daily traffic, degree of curvature, and presence of median with height less than 1.75 m and width less than 2.5 m. The developed model was subsequently applied to identify and rank hazardous road segments. The result shows that KM 92-93 (direction to Cileunyi) is the most hazardous segment at Purbaleunyi toll road.

Hubungan Antara Variasi Tarif Tol dengan Pendapatan dan Tingkat Pelayanan Hermawan, Rudy; Frazila, Russ Bona; Awang, Aranda; Jihanny, Jongga
Jurnal Teknik Sipil Vol 20, No 1 (2013)
Publisher : Institut Teknologi Bandung

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Abstrak. Tol dikenakan karena adanya penghematan biaya operasi kendaraan dan waktu, kenyamanan serta fasilitas yang lebih baik, sehingga penetapan besarnya tarif tol harus memenuhi asas keuntungan atau manfaat bagi pengguna. Meningkatnya jumlah pengguna jalan dan pertumbuhan ekonomi, menyebabkan terjadinya kemacetan di ruasruas jalan tol, terutama saat jam puncak. Untuk itu diperlukan pertimbangan penentuan variasi tarif tol terkait dengan waktu penggunaannya untuk memberikan insentif dan disinsentif pemakaian jalan tol agar bisa terdistribusi sehingga tidak membuat kemacetan pada saat atau waktu tertentu. Kajian ini dilakukan untuk mengetahui pengaruh variasi tarif tol apabila diberlakukan serta elastisitasnya. Sebagai studi kasus, kajian dilakukan di Jalan Tol Dalam Kota Jakarta (Jakarta Intra Urban Toll) dan Jalan Tol Lingkar Luar Jakarta (Jakarta Outer Ring Road). Pada kajian ini dilakukan survey Stated Preference, dan dilakukan beberapa simulasi arus laluÂ lintas serta pendapatan operator jalan tol dan jaringan jalan dengan software SATURN. Hasil kajian menunjukkan bahwa kenaikan tarif tol pada jam sibuk akan mengurangi volume lalu lintas jalan tol dan pendapatan. Namun, efek kenaikan harga tidak mengubah nilai Volume Capacity Ratio (VCR) dan Tingkat Pelayanan secara signifikan dikarenakan nilai waktu serta kebutuhan transportasi yang tinggi dan kapasitas jalan yang terbatas. Abstract. Toll is charged due to saving invehicle operating costs and time, comfort and better facilities, hence the amount of toll rates must satisfy the principle of profit or benefit to users. The increasing numbers of road users and economy growth lead to congestion at toll road sections, especially during peak hours. Thereforetoll rates variation associated with using time to provide incentives and disincentives in order to distribute toll roadâs use to prevent congestion occur at a specific time should be taken into consideration. This study was conducted to determine the effect of toll ratesvariationupon its application and its elasticity. Jakarta Intra Urban Toll (JIUT) and the Jakarta Outer Ring Road (JORR) were used as models. A Stated Preferencesurvey, and some simulation of traffic flow and toll roads operatorâs income and road networks using SATURN software were undertaken. This study showed that the increase in toll rates during peak hours would reduce the volume of highway traffic. However, the effect of increasing toll rates did not significantly change the value of Volume to Capacity Ratio (VCR), hence the Level of Service (LOS),due to time value, high transportation needs and limited road capacity.

APLIKASI CAR FOLLOWING MODEL UNTUK SIMULASI ARUS LALU LINTAS DI ALUR PELAYARAN SUNGAI Kadarsa, Edi; Lubis, Harun Al Rasyid S.; Sjafrudin, Ade; Frazila, Russ Bona
Prosiding Forum Studi Transportasi Antar Perguruan Tinggi Vol 2 No 1 (2015): Prosiding Forum Studi Transportasi antar Perguruan Tinggi
Publisher : FSTPT Indonesia

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To develop river transport in Indonesia, traffic flow research is required to analyse fairway capacity and level of service, and also transportation safety. Due to vessel traffic is insignificant, the research should be undertake using simulation model. To construct the simulation model, the vessel’s interaction rules in the system are required. Car following model may be applied to regulate the vessels’ interaction by perform some adjustments to characteristics of river, vessels, and driver. This research aims to select car following model and determine rezime to formulate the realistic driver behavior in the system, without discuss the river velocity effect to car following model.

Penerapan Konsep Vehicle Routing Problem dalam Kasus Pengangkutan Sampah di Perkotaan Lubis, Harun Al Rasyid; Maulana, Andrean; Frazila, Russ Bona
Jurnal Teknik Sipil Vol 23, No 3 (2016)
Publisher : Institut Teknologi Bandung

Abstrak. Kota-kota di negara berkembang masih mengoperasikan pengangkutan dan pengelolaan sampah secara tradisional di sisi jalan dan atau titik transfer di mana sampah dikumpulkan secara berkala oleh truk khusus, yang akhirnya akan dibawa ke tempat pembuangan akhir. Masalahnya semakin memburuk karena beberapa kota mengalami penurunan pelayanan angkutan sampah karena pengelolaan sistem yang tidak tepat, kapasitas fiskal untuk berinvestasi dalam armada kendaraan yang memadai dan juga karena tidak terkendali lokasi tempat pembuangan. Dalam makalah ini pengangkutan dan pengelolaan sampah dirumuskan berdasarkan Capacitated Vehicle Routing Problem Time Window Multiple Depo Intermediete Facility (CVRPTWMDIF). Setiap kendaraan ditugaskan untuk mengunjungi beberapa Tempat Pemrosesan Sementara (TPS), hingga truk penuh atau kapasitas angkut tercapai, kemudian sampah diangkut ke Tempat Pembuangan Akhir (TPA). Akhirnya semua truk kembali ke depot menjelang akhir operasi setiap harinya. Awalnya solusi CVRPTWMDIF diperiksa pada permasalahan sederhana sebelum diperiksa ke dalam pengangkutan sampah yang nyata. Solusi yang ditemukan menggunakan CVRPTWMDIFdibandingkan dengan praktek angkutan sampah di Kota Bandung, ditemukan bahwa dengan jam operasi dan jumlah armada angkut yang sama CVRPTWMDIF dapat mengurangi volume sampah yang tak terangkut hampir setengahnya pada akhir operasi harian.Abstract. Cities in developing countries still operate a traditional waste transport and handling where rubbish were collected at regular intervals by specialized trucks from curb-side collection or transfer point prior to transport them to a final dump site. The problem are worsening as some cities experience exhausted waste collection services because the system is inadequately managed, fiscal capacity to invest in adequate vehicle fleets is lacking and also due to uncontrolled dumpsites location. In this paper problem of waste collection and handling is formulated based on Capacitated Vehicle Routing Problem Time Window Multiple Depo Intermediete Facility (CVRPTWMDIF). Each vehicle was assigned to visit several intermediate transfer points, until the truck loading or volume capacity reached then waste are transported to final landfill or dump site. Finally all trucks will return to a depot at the end of daily operation. Initially the solution of CVRPTWMDIF problem was tested on a simple hypothetical waste handling before being implemented into a real case problem. Solutions found using CVRPTWMDIF compared with the practice of waste transport and handling in the city of Bandung. Based on a common hours of operation and the same number of transport fleets, it was found that CVRPTWMDIF can reduce the volume of waste that is not transported by almost half by the end of the daily operations.

POTENSI PENGGUNAAN ANGKUTAN INFORMAL DI KOTA BANDUNG Bahar, Taslim; Kusbiantoro, B.S.; Z. Tamin, Ofyar; Bona Frazila, Russ
Jurnal Transportasi Vol 11, No 3 (2011)
Publisher : Jurnal Transportasi

Limited size of the road dimension in an area could prevent formal public transport (four-wheeled vehicles) to serve the area. This condition led to the rise of public transport alternatives, such as motorcycle ojek, with flexible routes and rates. Currently, their operation and service tend to increase in many cities in Indonesia. This study aims to determine the potential use of ojek as an alternative to public transport in urban areas.Analyses were performed using the causal relationship between services quality factors with the satisfaction and loyalty of users, using the Structural Equation Modeling (SEM) method. The results showed that more than 70% of users who will continue to use motorcycle ojek for a long time, especially in suburban areas, and about 30% are likely to switch to alternative modes, especially users with the end destination of employment.Keywords: motorcycle-ojek, user satisfaction, user loyalty.

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