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Abstrak :
Kerugian ekonomi akibat kemacetan lalu lintas di wilayah Jabodetabek mencapai Rp.3 triliun/tahun untuk biaya operasi kendaraan dan Rp. 2,5 triliun/tahun untuk waktu perjalanan. Dalam rangka menanggulangi permasalahan transportasi, termasuk kemacetan lalu-lintas di wilayah Jabodetabek, studi SITRAMP (2004) merekomendasikan perlunya program pengembangan angkutan umum. Rekomendasi ini perlu dicermati, mengingat adanya opini sebagian masyarakat yang menganggap angkutan umum khususnya jenis minibus (angkot) tidak efisien dan merupakan biang keladi kemacetan. Penelitian ini bertujuan mengkaji karakteristik dan perilaku angkutan umum jenis minibus dan pengaruhnya terhadap kinerja lalu-lintas, mengkaji karakteristik desain lingkungan sekitar dan pengaruhnya terhadap perilaku lalu-lintas, serta memberikar saran/masukan dalam penanganan masalah lalu-lintas. Sebagai studi kasus diambil segmen ruas jl. Ciledug Raya depan CBD Ciledug Mall, kota Tangerang. Pengumpulan data perilaku lalu-lintas dilakukan melalui pengamatan video kamera. Metode analisa yang digunakan adalah analisa korelasi, regresi, dan analisa deskriptif. Hasil analisa menunjukkan bahwa angkutan umum minibus memiliki perilaku lalu-lintas yang unik untuk setiap trayeknya, dan mempunyai pola berbeda untuk setiap arah pergerakannya. Motiv ekonomi, faktor kebiasaan, sistem budaya dan norma tidak tertulis yang berlaku di antara para pengemudi angkutan umum minibus, melatar belakangi perilaku lalu-lintas tersebut. Variabel load factor memiliki korelasi sedang terhadap variabel kecepatan angkutan umum minibus, dan variabel jumlah penumpang naik/turun memiliki korelasi kuat terhadap variabel rata-rata lama henti angkutan umum minibus. Pengaruh perilaku lalu-lintas angkutan umum minibus, meliputi: jumlah kendaraan berhenti, dan kecepatan rata- rata angkutan umum minibus mempunyai korelasi kuat dan sedang terhadap variabel kecepatan kendaraan pribadi roda-4 arus menerus. Desain bukaan median/simpang di lokasi studi tidak sesuai dengan standar geometri simpang yang ada, dan mengakibatkan konflik ruang gerak antara jalur lalu-lintas belok kanan dengan garis henti (stop line) arus lalu-lintas terlawan. Desain bukaan median juga tidak sejalan dengan adanya rambu dilarang belok kanan dan berputar bagi arus lalu-lintas dari arah jalan Ciledug Raya (Timur). Disarankan penutupan bukaan median, rehabilitasi fungsi terminal dan halte, evaluasi sistem perizinan trayek, dan penataan ulang trayek/rute angkutan umum......Economic losses due to traffic jams in the Greater Jakarta area reach Rp. 3 trillion/year for vehicle operating costs and Rp. 2.5 trillion/year for travel time. In order to overcome transportation problems, including traffic congestion in the Greater Jakarta area, the SITRAMP study (2004) recommends the need for a public transportation development program. This recommendation needs to be observed, given the opinion of some people who think that public transportation, especially the minibus (angkot) is inefficient and is the cause of congestion. This study aims to examine the characteristics and behavior of minibus types of public transportation and their effect on traffic performance, examine the design characteristics of the surrounding environment and its influence on traffic behavior, and provide suggestions/inputs in handling traffic problems. As a case study, the segment of the Jl. Ciledug Raya in front of CBD Ciledug Mall, Tangerang city. Traffic behavior data collection is done through video camera observations. The analytical method used is correlation analysis, regression, and descriptive analysis. The results of the analysis show that minibus public transport has a unique traffic behavior for each route, and has a different pattern for each direction of movement. Economic motives, habit factors, cultural systems and unwritten norms that apply among minibus public transport drivers are the background of the traffic behavior. The load factor variable has a moderate correlation to the variable speed of minibus public transport, and the variable number of passengers getting on/off has a strong correlation to the variable average length of stopping of minibus public transport. The influence of minibus public transport traffic behavior, including: the number of vehicles stopped, and the average speed of minibus public transport has a strong and moderate correlation to the variable speed of continuous flow 4-wheeled private vehicles. The design of the median/intersection opening at the study site is not in accordance with the existing intersection geometry standards, and results in a conflict of movement space between right-turning traffic lanes and the stop line of opposing traffic flows. The design of the median opening is also not in line with the sign prohibiting turning right and turning for traffic flow from the Ciledug Raya (East) road. It is recommended to close the median opening, rehabilitate the function of terminals and bus stops, evaluate the route licensing system, and rearrange public transport routes/routes.

Abstrak :
Kerugian ekonomi akibat kemacetan lalu lintas di wilayah Jabodetabek mencapai Rp.3 triliun/tahun untuk biaya operasi kendaraan dan Rp. 2,5 triliun/tahun untuk waktu perjalanan. Dalam rangka menanggulangi permasalahan transportasi, termasuk kemacetan lalu-lintas di wilayah Jabodetabek, studi SITRAMP (2004) merekomendasikan perlunya program pengembangan angkutan umum. Rekomendasi ini perlu dicermati, mengingat adanya opini sebagian masyarakat yang menganggap angkutan umum khususnya jenis minibus (angkot) tidak efisien dan merupakan biang keladi kemacetan. Penelitian ini bertujuan mengkaji karakteristik dan perilaku angkutan umum jenis minibus dan pengaruhnya terhadap kinerja lalu-lintas, mengkaji karakteristik desain lingkungan sekitar dan pengaruhnya terhadap perilaku lalu-lintas, serta memberikan saran/masukan dalam penanganan masalah lalu-lintas. Sebagai studi kasus diambil segmen ruas jl. Ciledug Raya depan CBD Ciledug Mall, kota Tangerang. Pengumpulan data perilaku lalu-lintas dilakukan melalui pengamatan video kamera. Metode analisa yang digunakan adalah analisa korelasi, regresi, dan analisa deskriptif. Hasil analisa menunjukkan bahwa angkutan umum minibus memiliki perilaku lalu-lintas yang unik untuk setiap trayeknya, dan mempunyai pola berbeda untuk setiap arah pergerakannya. Motiv ekonomi, faktor kebiasaan, sistem budaya dan norma tidak tertulis yang berlaku di antara para pengemudi angkutan umum minibus, melatar belakangi perilaku lalu-lintas tersebut. Variabel load factor memiliki korelasi sedang terhadap variabel kecepatan angkutan umum minibus, dan variabel jumlah penumpang naik/turun memiliki korelasi kuat terhadap variabel rata-rata lama henti angkutan umum minibus. Pengaruh perilaku lalu-lintas angkutan umum minibus, meliputi: jumlah kendaraan berhenti, dan kecepatan ratarata angkutan umum minibus mempunyai korelasi kuat dan sedang terhadap variabel kecepatan kendaraan pribadi roda-4 arus menerus. Desain bukaan median/simpang di lokasi studi tidak sesuai dengan standar geometri simpang yang ada, dan mengakibatkan konflik ruang gerak antara jalur lalu-lintas belok kanan dengan garis henti (stop line) arus lalu-lintas terlawan. Desain bukaan median juga tidak sejalan dengan adanya rambu dilarang belok kanan dan berputar bagi arus lalu-lintas dari arah jalan Ciledug Raya (Timur). Disarankan penutupan bukaan median, rehabilitasi fungsi terminal dan halte, evaluasi sistem perizinan trayek, dan penataan ulang trayek/rute angkutan umum. ......Annual economic loss caused by traffic congestion in Jabodetabek region could be as much as Rp. 3,000 billion for vehicle operating costs and Rp. 2,500 billion for travel time. To overcome transportation problem, including traffic congestion in Jabodetabek region, study SITRAMP (2004) recommending the importance of public transport development program. This recommendation require to be applied neglectlessly, considering of some people opinion assuming that public transport especially for minibus type (angkot) is inefficient and represent the major cause of traffic congestion problem. This study aim to identify characteristic and traffic behavior of angkot and its influence to traffic performance, identify characteristic of engineering design and its influence to traffic behavior, and give suggestion in handling of traffic problem. As case study one segment of jl. Ciledug Raya front of CBD Ciledug Mall, Tangerang was chosen.Data collecting was conducted by video camera observing. The analysis use method of correlation, regression, and decriptive analysis. Result of analysis showed that minibus public transport has unique traffic behavior to each its route, and has pattern differ to each flow direction. Economic motivation, habit factor, cultural system and unwritten norm among driver of minibus public transport represent background of their traffic behavior. Variable of load factor have medium correlation to variable speed of angkot, and variable of number of loading/unloading passenger have strong correlation to variable mean of stopped time. Influence of minibus (angkot) traffic behavior which represented by variable: number of stopped vehicle and mean speed of angkot, have strong and medium correlation to variable mean speed of private vehicle (4 wheels) of through traffic. Design of existing median opening (intersection) in study area disagree with intersection geometry standard, and result conflict between lane of right turn traffic and stopping line of opposed traffic. Design of median opening was also disagree with traffic sign of prohibited right turn and prohibited u-turn for traffic from jl. Ciledug Raya (Eastbound). It is suggested to close of median opening, rehabilitation of terminal and shelter function, evaluation of public transport route permit system, and rearrange public transport route.