Ismiyati Ismiyati
Jurusan Teknik Sipil FT. UNDIP Jl. Prof. Soedarto SH., Tembalang, Semarang 50275

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PENYEDIAAN TRANSPORTASI UMUM MASA DEPAN DI KOTA SEMARANG Siti Rahma; Dyah Amalia Wijayanti; Ismiyati Ismiyati; Djoko Purwanto
Jurnal Karya Teknik Sipil Volume 3, Nomor 1, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

The increasing number of private vehicles using in Semarang causes a high traffic volume in some primary roadways of the city. It can be seen from the use of official cars vehicle / personal that originally totaled 34,000 vehicles in 2007 to 44,600 vehicles in 2009 (Badan Pusat Statistik Kota Semarang, 2009). The presence of mass public transportation Bus Rapid Transit, which is Trans Semarang, is considered not able to overcome such problem yet. The value of the load factor both BRT corridor I and II were only 20-30%. (Based on research Chairunnisa R, Yenni N, 2010 and Ilham H. Rasyid, Aldila Bachtawar., 2013). The aim of this research is to evaluate public transportation’s performance and to figure out the policy of public transportation that is suitable for the economic condition, and demand from citizens of the city of Semarang. The methods used are analyzing previous research data about public transportation, especially BRT Trans Semarang, and processing primary data in the form of interview survey to citizens. The survey is done in three sub-districts: Ngaliyan, Pedurungan, and Banyumanik. The aspects that are reviewed through the side of effectiveness and efficiency of public transportation are headway, frequency, public transport fares, security, safety, and comfort. According to the result of the research, it is identified that more than 50% of citizens prefer using private vehicles, because the public transportation had not satisfy yet. Therefore, the effort of improving and developing provided public transportation is needed. In this case, the region is divided into two sections journey, namely urban and suburban areas. In the urban areas, can be done by revamping the BRT transport system, the provision of special BRT lane, and the provision of feeder that fits the needs of society. Whereas in suburban areas, public transportation is needed for high speed travel time savings, in addition to reducing the occurrence of traffic congestion on the main roads of the city.
PENYEDIAAN TRANSPORTASI UMUM MASA DEPAN DI KOTA SEMARANG Siti Rahma; Dyah Amalia Wijayanti; Ismiyati Ismiyati; Djoko Purwanto
Jurnal Karya Teknik Sipil Volume 3, Nomor 2, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

The increasing number of private vehicles using in Semarang causes a high traffic volume in some primary roadways of the city. It can be seen from the use of official cars vehicle / personal that originally totaled 34,000 vehicles in 2007 to 44,600 vehicles in 2009 (Badan Pusat Statistik Kota Semarang, 2009). The presence of mass public transportation Bus Rapid Transit, which is Trans Semarang, is considered not able to overcome such problem yet. The value of the load factor both BRT corridor I and II were only 20-30%. (Based on research Chairunnisa R, Yenni N, 2010 and Ilham H. Rasyid, Aldila Bachtawar., 2013). The aim of this research is to evaluate public transportation’s performance and to figure out the policy of public transportation that is suitable for the economic condition, and demand from citizens of the city of Semarang. The methods used are analyzing previous research data about public transportation, especially BRT Trans Semarang, and processing primary data in the form of interview survey to citizens. The survey is done in three sub-districts: Ngaliyan, Pedurungan, and Banyumanik. The aspects that are reviewed through the side of effectiveness and efficiency of public transportation are headway, frequency, public transport fares, security, safety, and comfort. According to the result of the research, it is identified that more than 50% of citizens prefer using private vehicles, because the public transportation had not satisfy yet. Therefore, the effort of improving and developing provided public transportation is needed. In this case, the region is divided into two sections journey, namely urban and suburban areas. In the urban areas, can be done by revamping the BRT transport system, the provision of special BRT lane, and the provision of feeder that fits the needs of society. Whereas in suburban areas, public transportation is needed for high speed travel time savings, in addition to reducing the occurrence of traffic congestion on the main roads of the city.
ANALISIS DAMPAK OPTIMASI SIMPANG BERSINYAL TERHADAP EMISI GAS BUANG Kresna Raditya; Muhammad Rudissalam; Ismiyati Ismiyati; Kami Hari Basuki
Jurnal Karya Teknik Sipil Volume 3, Nomor 1, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstract

Siliwangi road is one soars and populous Primary Arterial Road in the Semarang City, so often there is congestion on the roads. Result of frequent congestion on the roads, air pollution which occurs also higher. This study aims to determine how high the air pollution that occur and to provide recommendations for alternative solutions to tackle congestion at the intersection whole observatories, so as to minimize the air pollution that occurs. Traffic survey at the intersection whole observatories done during the morning Peak hour, afternoon Peak hour and evening Peak hours. Survey results are then processed by the Manual Kapasitas Jalan Indonesia (MKJI) 1997 Synchro SimTraffic Program 7.0. Initially, the green time adapted to the needs of the existing condition, then the following adjustments were made in the form of changes in the geometric intersection to accommodate existing traffic conditions. Adjustment of the traffic conditions and the geometric path then known how much pollution that occurred at the intersection. At the intersection of the existing conditions in whole observatories already reached saturation performance , with the calculation of the degree of saturation of the synchro program 7 that almost all of them are above the 1.00 figure. With the adjustment Optimization green time to Simpang whole observatories provide DS to decrease Morning Peak condition that is equal to 5.82%, 5.82% Peak Afternoon, Evening Peak 9.89% and the change in geometric intersection (lane additions of 3.7 m) on condition Morning Peak, Peak Afternoon, Evening Peak resulting decrease in DS respectively 23.80%, 8.95%, and 14.58%. Although not all perform well and there are still some poor performers approach (indicators of poor performance where the value of the degree of saturation exceeds the ideal value of the degree of saturation (DS>0.75). Use of Public Transport assuming 50% removal of the car was replaced with highly efficient use of BRT in reducing the number of DS on condition Morning Peak , Peak Lunch, Afternoon Peak resulting decrease in DS respectively 60.84%, 47.01%, and 61.97%. The scenario design is done well enough for the level of handling performance in the short term. So, it can be concluded that the performance of intersections that were reviewed for the better.