Analisis Dampak Gang pada Putaran Balik Terhadap Kinerja Ruas Jalan Raya Affandi Yogyakarta
Authors: Romadhona Prima J. , Fauzi Rizqi Imam 
Published: June 2018

Jalan Affandi merupakan salah satu ruas jalan di Kota Yogyakarta yang mempunyai arus lalu lintas yang cukup tinggi. Penelitian ini dilakukan untuk mengetahui nilai panjang antrian, tundaan, dan kecepatan di Jalan Affandi Yogyakarta akibat adanya posisi putaran balik yang terdapat di depan gang akses masuk. Selain itu, akan dimodelkan pula usulan manajemen lalu lintas untuk meningkatkan kinerja ruas jalan tersebut. Pengambilan data dilakukan pada hari Sabtu dan Rabu dan dimodelkan dengan perangkat lunak VISSIM. Selanjutnya, perhitungan perencanaan bukaan median fasilitas putar balik menggunakan standar dari Bina Marga 2005. Hasil analisis pada kondisi eksisting menunjukkan nilai panjang antrian dan tundaan masing-masing sebesar 67,03 m dan 22,61 s, sedangkan untuk kecepatan arah utara-selatan sebesar 23,04 Km/jam dan untuk arah Selatan-Utara sebesar 26,69 km/jam. Usulan alternatif I menunjukkan bahwa pemindahan dan penutupan bukaan median fasilitas putar balik sejauh 60 meter dari gang didapatkan penurunan hasil panjang antrian dan tundaan berturut-turut sebesar 91,84% dan 79,08%, serta untuk kecepatan kendaraan arah Utara-Selatan mengalami kenaikan sebesar 29,84% dan arah Selatan-Utara sebesar 33,39% dari kondisi eksisting. Usulan alternatif II menunjukkan bahwa pemindahan bukaan median sejauh 50 meter dari gang didapatkan penurunan hasil panjang antrian dan tundaan hasil sebesar 53,66 % dan 76,64 % serta untuk kecepatan kendaraan arah Utara-Selatan mengalami kenaikan sebesar 26,55% dan arah Selatan-Utara 32,80% dari kondisi eksisting. Kesimpulannya, semakin jauh posisi putaran balik dari gang, maka menunjukkan peningkatan kinerja lalu lintas yang lebih baik.Kata kunci: Median, Kinerja Lalu Lintas, U-Turn, VISSIMAffandi street was one of the area at Yogyakarta that has high traffic flow. The research data was conducted with field survey covering road geometry, traffic volume, queue length, delay, and vehicle speed on Saturday and Wednesday. The calculation of u-turn planning was used Bina Marga guideline then modelled with VISSIM software. At the existing conditions showed the queue length and delay were 67.03 meters and 22.61 seconds. The velocity at North-South was 23.04 km/h and at South-North direction was 26.69 km/h. The result of the solution I showed that the displacement of the u-turn as far as 60 meters from the alley obtained decreasing number of queue length and delay as much as 91.84% and 79.08%. Moreover, vehicle speed at North-South direction increased 29.84% and South-North increased 33.39% from existing conditions. On the other hand, solution II showed that the displacement of median opening as far as 50 meters from alley was obtained decreasing number of queue length and delay as much as 53.66% and 76.64%. Therefore, vehicle speed at north-south direction increased 26.55% and at South-North increased 32.80% from existing condition. Finally, the further position of u-turn from the alley, the better improvement of traffic performance. Keywords: Median, Traffic Performance, U-Turn, VISSIM