Kontrol Lalu Lintas Bersinyal di Lokasi Penyempitan Ruas Jalan pada Kondisi Arus Lalu Lintas Lewat Jenuh

Widjajanti, Endang (2009) Kontrol Lalu Lintas Bersinyal di Lokasi Penyempitan Ruas Jalan pada Kondisi Arus Lalu Lintas Lewat Jenuh. Doctoral thesis, Faculty of Engineering University of Indonesia.

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Abstract

Road activities usually require the closure of one of the two ways two lane roads constitute the restrictive bottleneck of the road system, which need a special effort to maximize the capacities of bottleneck areas, especially on over saturation traffic condition The objective of the study is to develop a signal-control strategy and its application for road closure area on two way two lanes roads which is treated as an isolated intersection during severe over saturation. To disperse the queues of the two approaches in the same time, the study developed a new method by introducing a ratio between cumulative departure and cumulative arrival (R). The study showed that switch over of green time was effectively dispersed all the vehicles of the two approaches in the same cycle. The result of the study indicates that optimal green time happened if one of the approach has reached R>0.95. With the same arrival and saturation flow data, the method introducing in this study has a better performance results comparing amongst the previous methods, i.e. the Discrete Minimal Delay Model and the Maximum Throughput Model. The study conducted a signalized control simulation on road closure areas on two way two lane roads with the assumption that the road severe over saturation on the first 300 seconds which resulted that various arrival detection has a diffrent total delay but has the same average throughput and over saturation period. The simulation results show that the optimum arrival detection period is 240 seconds and the optimum cycle time is 240 seconds. The study give indication of the percentage of increasing total delay if the there is a change of vehicle arrival detection period from 240 seconds to less than 240 seconds (i.e 120 seconds and 180 seconds). The study indicates the percentage of increasing total delay, decreasing of average throughput and decreasing of over saturation period if the there is a change of cycle time from 240 seconds to less than 240 seconds (i.e 120 seconds, 150 seconds,180 seconds and 210 seconds). The study also indicates the maximum work zone length to accommodate by signalized traffic control in over saturation traffic condition based on total Degree of Saturation (DS), average speed on lane closure area (Sw) and the relationship between total delay, average throughput and over saturation period and length of road closure areas (Lw). Key words: signalized traffic control, road clousure areas, oversaturated

Item Type:	Thesis (Doctoral)
Subjects:	L Education > L Education (General)
Divisions:	Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User:	Dr. ENDANG WIDJAJANTI ISTN
Date Deposited:	04 Apr 2023 10:59
Last Modified:	04 Apr 2023 10:59
URI:	http://repository.istn.ac.id/id/eprint/6067

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