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Ofyar Z. Tamin
Guru Besar Teknik Transportasi Program Studi Teknik Sipil FTSL Institut Teknologi Bandung
Transportation

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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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1010.771 KB)

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.421 KB)

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.297 KB)

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.574 KB)

Abstract

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
KAJIAN TARIF ANGKUTAN KOTA TRAYEK 011 DI KOTA TASIKMALAYA Judiantono, Tonny; S. Permana, Yoga; Z. Tamin, Ofyar
Jurnal Transportasi Vol 9, No 1 (2009)
Publisher : Jurnal Transportasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.998 KB)

Abstract

The identification of transportation cost structure could help public transportation managers to determine the minimum tariff that can provide the maximum service for peoples. The tariff should be acceptable by the users and still gives fair profit for the operators. This study investigated the public transport Rute number 011(Sub Terminal Pancasila – Pasirangin) in Tasikmalaya City, to find the ability and the willingness to of the users. It was found that the current fare of public transport for Kota Tasikmalaya is higher than the ability to pay of the users.Keywords: tariff, fare, public transportation, and ability to pay.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1010.771 KB) | DOI: 10.26593/jt.v11i3.459.%p

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.421 KB) | DOI: 10.26593/jt.v9i1.348.%p

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.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.297 KB) | DOI: 10.26593/jt.v10i1.381.%p

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (201.574 KB) | DOI: 10.26593/jt.v9i2.355.%p

Abstract

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
KAJIAN TARIF ANGKUTAN KOTA TRAYEK 011 DI KOTA TASIKMALAYA Judiantono, Tonny; S. Permana, Yoga; Z. Tamin, Ofyar
Jurnal Transportasi Vol 9, No 1 (2009)
Publisher : Jurnal Transportasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.998 KB) | DOI: 10.26593/jt.v9i1.345.%p

Abstract

The identification of transportation cost structure could help public transportation managers to determine the minimum tariff that can provide the maximum service for peoples. The tariff should be acceptable by the users and still gives fair profit for the operators. This study investigated the public transport Rute number 011(Sub Terminal Pancasila – Pasirangin) in Tasikmalaya City, to find the ability and the willingness to of the users. It was found that the current fare of public transport for Kota Tasikmalaya is higher than the ability to pay of the users.Keywords: tariff, fare, public transportation, and ability to pay.
Co-Authors Ade Sjafruddin B.S. Kusbiantoro Nindyo Cahyo Kresnanto Russ Bona Frazila Sofyan M. Saleh Taslim Bahar Tonny Judiantono Yoga S. Permana