PENGARUH KENDARAAN PARKIR DI EXIT LANE TERHADAP ARUS JENUH PERSIMPANGAN BERSINYAL Studi Kasus: Persimpangan Jl. Veteran- JI. Bandang-Jl. Mesjid Raya Kota Makassar
Tesis Magister
Oleh MASHURI NIM : 250 98 063
BIDANG KHUSUS REKAYASA TRANSPORTASI PROGRAM STUDI TEKNIK SIPIL PROGRAM PASCASARJANA I NSTITUT TEKNOLOGI BANDUNG 2001
PENGARUH KENDARAAN PARKIR DI EXIT LANE TERHADAP ARUS JENUH PERStMPANGAN BERSINYAL Studi Kasus : Persimpangan P. Veteran - R. Bandang - Jl. Mesjid Raya Kota Makassar
Ir~Sri/Hendar~p M.Sc. v'
I r. Willy Tumewu, M.Sc.
RINGKASAN PENGARUH PARKIR KENDARAAN DI EXIT-LANE TERHADAP ARUS JENUH PERSIMPANGAN BERSINYAL (Studi Kasus Simpang Jalan Veteran - Jalan Bandang - Jalan Mesjid Raya di Makassar) Oleh : Mashuri, 2001,Bidang Khusus Rekayasa Transportasi, Program Studi Teknik Sipil, Program Pascasarjana, ITB. Penelitian ini bertujuan mengidentifikasi pengaruh kendaraan yang parkir di daerah Exit-lane terhadap Arus jenuh dan Lama pengosongan simpang. Data didapat dari survei arus jenuh dan survei lama pengosongan simpang dengan beberapa jarak parkir ke Stop-line. Penelitian ini menskenariokan parkir kendaraan di Exit-lane dengan jarak parkir 21,5m: 31,5m: 41,5m: 51,5m ke Stop-line dan skenario tanpa parkir. Data dikumpulkan Tanggal 14 Maret, 15 Maret, 19 Maret, 20 Maret dan 21 Maret 2001 pada jam sibuk : jam 07.00 - 11.00 dan jam 13.00 - 16.00 WITA. 57 siklus jenuh skenario tanpa parkir, 62 siklus skenario jarak parkir 21,5m: 62 siklus jarak parkir 31,5m: 66 siklus jarak parkir 41,5m dan 60 siklus jarak parkir 51,5m. Pengaruh kendaraan parkir berpengaruh bila panjang antrian kendaraan di atas 50m. Jumlah siklus dengan panjang antrian minimum 50m adalah 33 siklus untuk setiap kondisi dan 33 siklus ini digunakan pada analisa selanjutnya. Arus jenuh didapat dengan menggunakan Metode Timeslice per 5 detik setiap pendekat. Data lama pengosongan simpang didapat dari waktu yang digunakan kendaraan terakhir lepas dari Stop-line ke titik konflik. Hasil studi mendapatkan bahwa hubungan arus jenuh dan jarak parkir mengikuti Model Logaritma, Y= 736,03Ln(X)+323,53. Hubungan jarak parkir dengan lama pengosongan simpang mengikuti Model Eksponensial, Y= 6,1316e'0' 61. Jarak parkir kendaraan 21,5m menyebabkan reduksi arus jenuh sebesar 28%, jarak parkir 31,5m sebesar 19%, jarak parkir 41,5m sebesar 15%, Jarak parkir 51,5m sebesar 10%. Untuk Lama pengosongan simpang didapat bahwa dalam kondisi simpang tidak terdapat kendaraan parkir lama pengosongan simpang sebesar 1,7 detik, artinya 2 detik yang real di lokasi sudah mencukupi. Jarak parkir dimana arus jenuh sudah tidak terpengaruh adalah 82m, untuk lama pengosongan simpang sebesar 71m. Den meirbandingkan arusjenuh pergerakan belok kanan dengan pergerakan lurus didapat angka Faktor belok kanan sebesar 0,93. iii
ABSTRACT EFFECT OF A PARKED VEHICLE IN THE EXIT-LANE ON SATURATION FLOW OF A SIGNALISED INTERSECTION (CaseStudy: Intersection Jalan Veteran-Jalan Bandang- J1. Mesjid Raya in Makassar). By: Mashuri, 2001, Bidang Khusus Rekayasa Transportasi, Program Studi Teknik Sipil, Program Pascasarjana, ITB. The objective of this study is to identify the effect of a parked vehicle in the exit-lane on saturation flow and intersection evacuation time.Data of saturation flow and evacuation time were collected with a survey for several parking distances to stop-line. The research comprised several parking positions in the exit-lane i.e, at 21,5m; 31,5m; 41,5m and 51,5m to stop-line respectively and without any parked vehicle. Data was collected during the peak hours on March 14', 15', 19 a', 20`x' and 21`x' 2001, i.e, at 07.00- 11.00 and 13.00- 16.00 WITA. The number of saturated cycles obtained for each condition are 62, 62, 66, 60 and 57 respectively. The number of cycles with a minimum queue length of 50m is 33 for each condition, and these were analysed further. The effect of a parked vehicle is noticed only when the queue length is at least 50m. Saturation flow was determined by Timeslice method of 5 seconds . Data of intersection evacuation time was calculated as a time taken by the latest vehicle leaving from stopline to the conflict point. The results of this study indicate that the relationship between saturation flow and parking distance followed the Logaritmic model, Y= 736,03Ln(X)+323,53. The relationship between parking distance and evacuation time followed the Eksponential model, Y= 6,13166 °' o ' 6t . The parked vehicle at 21,5m caused a reduction of saturation flow of 28%, at 31,5m 19%, at 41,5m 15%, at 51,5m 10%. For the intersection evacuation time found that without any parked vehicle, intersection evacuation time is 1,7second. This implies that, 2 second in real on study location still enough for intersection evacuation. The parking distance where the saturation flow has not been influenced by parking vehicle is 82m; for evacuation time is 71m. The comparison of saturation flow for right turn movement to saturation flow for straight ahead movement gives a right turn factor of 0,93.
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