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All Journal ETERNITAS
Don Gaspar Noesaku da Costa
Program Studi Teknik Sipil, Fakultas Teknik, Universitas Katolik Widya Mandira, Jl. San Juan No.1 Penfui, Kupang, NTT, Indonesia
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Engineering Environmental Science Transportation

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ANALISIS PENGARUH RASIO KENDARAAN BELOK KANAN TERHADAP KINERJA SIMPANG TAK BERSINYAL Christinna Odilla Saba; Don Gaspar Noesaku da Costa; Engelbertha N.B. Seran
Eternitas: Jurnal Teknik Sipil Vol 1 No 2 (2022): ETERNITAS : Jurnal Teknik Sipil, Vol 1, No 2 April 2022
Publisher : Program Studi Teknik Sipil Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/eternitas.v1i2.1598

Abstract

The ratio of right-turning vehicles is very influential on delays and queuing opportunities at unsignalized intersections. This study will compare the effect of the right turn ratio on the performance of the intersection at two locations with different right turn ratio characteristics, namely at the Timor Raya - Nangka street intersection which has a high right turn volume and the Samratulangi Raya - Samratulangi I street intersection with a low right turn volume. The standard of intersection performance is according to the 1997 MKJI guidelines. At the intersection of Timor Raya - Nangka street, the results show that the ratio of right-turning vehicles affects the performance of unsignaled intersections, with a degree of saturation (DS) = 1.246 > 0.75, delay (D) = 57 ,80 sec/smp > 25 sec/smp and queue probability (QP)= 63,6 %-130,4 % > 50 %. The effect of the right turn ratio on the degree of saturation (DS) = 97.53%, delay (D) = 72.12% and queue probability (QP) = 96.15%-95.37% with level of service F (very bad). On Samratulangi Raya - Samratulangi I street intersiction, the results show that the right turn ratio has no effect on the performance of unsignalized intersections, with a degree of saturation (DS) = 0.586 < 0.75, delay (D) = 9.85 sec/smp < 25 sec/smp and queue probability (QP)= 14,5 %-30,9 % < 50 % with level of service B (good). The solution at the Timor Raya - Nangka road intersection is to eliminate side barriers, widen the road, install right-turning signs and regulate one-way traffic.
ANALISIS BATAS KECEPATAN PADA JALAN LOKAL SEKUNDER Venasius H. A. Plue; Don Gaspar Noesaku da Costa; Agustinus H. Pattiraja
Eternitas: Jurnal Teknik Sipil Vol 2 No 1 (2022): ETERNITAS : Jurnal Teknik Sipil, Vol 2, No 1 Oktober 2022
Publisher : Program Studi Teknik Sipil Universitas Katolik Widya Mandira

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30822/eternitas.v2i1.1704

Abstract

The San Juan Road is one of the vehicle routes to El Tari airport and the Navy Airfield (LANUDAL) which also connects the intersection to the Widya Mandira Catholic University (UNWIRA) campus area. On these roads, there is often a choice of speed that is not in accordance with the function of the road so that it can endanger road users. The spot speed model is used to determine the actual speed at the study site, where the 85th percentile speed is used to determine the maximum speed which is then used to analyze accident risk for traffic conditions and roadside friction in the study location. From the research results, it is known that the actual speed is 31.66 km/hour for motorcycles, 20.16 km/hour for light vehicles and 16.79 km/hour for heavy vehicles. Theoretically, the speed is in accordance with the local road function classification, which is less than 40 km/hour. The 85th percentile speed is 26 - 30 km/h. However, due to fluctuations in the flow of vehicles entering/exiting gateways during peak hours and the aggressive behavior of road users, it was noted that there were 9 conflicts in the medium category due to the choice of critical crossing gaps for motorcyclists. The recommended solution is the installation of speed limit signs and prioritizing movement at unsignalized intersection areas, and socializing travel safety.
Co-Authors Agustinus H. Pattiraja Christinna Odilla Saba Engelbertha N.B. Seran Venasius H. A. Plue