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All Journal Warta Penelitian Perhubungan Journal of Indonesia Road Safety Makara Journal of Technology
Martha Leni Siregar
Civil Engineering Dept., Fac. Of Engineering, Universitas Indonesia
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Journal : Makara Journal of Technology

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Hazard-Driven Drivers’ Behaviours towards Vehicle-to-Median Safe Distances Siregar, Martha Leni
Makara Journal of Technology Vol. 19, No. 1
Publisher : UI Scholars Hub

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Abstract

A median is required for a two-way road to separate traffic from opposing lanes and to prevent head-on collisions. However, studies indicate that medians are also perceived as hazards which need to be avoided during driving. This hazard perception is manifested in drivers’ changing behavior towards various types of medians along the driving lanes inform of their tendency to allow various safe distances to the medians. The Indonesian Highway Capacity Manual (IHCM) does not differentiate between types of medians and the influence on the drivers’ choice of safe margin to the medians. Therefore, this study looks into how the existence and types of medians influence the safety distances of different categories of vehicles from different types of medians as the manifestation of their perception of hazard potentials of medians. Traffic recordings on different categories of vehicles are used to obtain movement margins of vehicles along various medians during near-saturated traffic. Using the smallest values of 10 and 90 percentile of distances, the results show that drivers shy from 0.27 m to 0.82 m from medians. The result of this study will contribute to the change of applied assumptions used in determining the effective lane capacity to road safety-based assumptions.
Co-Authors Ahmad Septiawan Fadhliya Afifa Arifin, Fadhliya Afifa Guritnaningsih Guritnaningsih Heddy R, Agah, Heddy R, Jachrizal Sumabrata Luh Putu Ratna Sundari Mujib Ridha Ridha, Mujib Tri Tjahjono Tuti Alawiyah