No abstract

Jalan yang memiliki kekasaran (roughness) permukaan yang buruk dapat menyebabkan ketidaknyamanan bagi pengguna jalan, kecelakaan lalu lintas, peningkatan beban dinamis pada permukaan jalan sehingga mempercepat proses kerusakan jalan, serta kerusakan kendaraan. Penelitian ini bertujuan untuk mengevaluasi kemantapan kondisi jalan berdasar nilai international roughness index (IRI). Evaluasi kondisi kemantapan jalan dilakukan pada 14 ruas jalan di Kota Yogyakarta, dengan perincian 4 ruas jalan arteri sekunder dan 10 ruas jalan kolektor sekunder. Data nilai kekasaran permukaan jalan (IRI) diperoleh dengan menggunakan alat NAASRA roughness meter yang mengacu pada SNI 03-3426-1994. Evaluasi kemantapan kondisi jalan dilakukan dengan membandingkan nilai IRI hasil survei dan batasan nilai IRI yang ditetapkan oleh Direktorat Jenderal Bina Marga. Hasil penelitian menunjukkan 14 ruas jalan yang dievauasi 64% dalam kondisi sedang dan 36% dalam kondisi baik. Dari ke-14 ruas jalan tersebut, ruas jalan Sisingamangaraja, Lowanu, dan Sugeng Jeroni memiliki nilai IRI tertinggi secara bururutan sehingga ketiga ruas jalan tersebut lebih diprioritaskan untuk mendapatkan penanganan

Planning, Designing and constructing road infrastructure should give priority to the safety and comfort for road users. Ironically, road infrastructure often becomes the cause of traffic accidents. However, such problem can be solved with a profound understanding in the effect of road infrastructure formation elements on the risk of accidents, so that the handling taken can be more efficient. This study aims to (1) review and see the effect of road infrastructure on accidents, (2) provide handling efforts to improve road infrastructure safety. Secondary sources in the form of books and academic journals were reviewed to answer the research objectives above. The results of the study indicated that the elements in road infrastructure formation had significant effect on the risk of traffic accident. Preventing and handling traffic accidents in terms of the road infrastructure can start from planning, designing, constructing, and improving road infrastructure in accordance with prevailing procedures such as Road Safety Audit (RSA) and Road Safety Inspection (RSI). The role of government such as making safety design standard, assuring compliance with these rules, and methods to measure and rate the overall level of safety being achieved is needed in order to improve road safety.

There were 100,106 cases of traffic accidents that occurred in Indonesia in 2013, in which 26,416 people died, 28,438 people were seriously injured, and 110,448 people were mildly injured. Road infrastructure is one of the components of traffic safety. If it is not planned, designed, built and maintained properly, conditions such as poor geometry, damaged and unmaintained pavement surfaces can cause traffic accidents. Understanding of risk factors for road infrastructure accident and weighting of factors are an important step in increasing traffic safety. In addition, limited data on accidents in Indonesia also pose an obstacle in evaluating accidents. This study aims to weight risk factors for road infrastructure accident without accident data using the analytic hierarchy process (AHP) method. 40 respondents consisting of academics, practitioners, and stakeholders participated in filling out questionnaires on assessing risk factors for road infrastructure accident. The weighting results using AHP indicated that the priority ranking of accident risks from the largest to the smallest were road surface conditions, geometric conditions, road equipment, roadside hazard and road complementary buildings respectively. This study was limited to two-way, two-lane undivided urban road (4/2 UD) on straight and flat segments. Other segments and types of roads needs to be used because different types of roads have different risk factors and weights. The AHP method was used at the weighting phase without the process of assessing the existing road infrastructure.