Australian Journal of Basic and Applied Sciences, 11(10) July 2017, Pages: 41-47 AUSTRALIAN JOURNAL OF BASIC AND APPLIED SCIENCES ISSN:1991-8178 EISSN: 2309-8414 Journal home page: www.ajbasweb.com Open Access Journal Published BY AENSI Publication © 2017 AENSI Publisher All rights reserved This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ To Cite This Article: Lambang Basri Said, Muhtar Tahir, Maryam Hapram, Qadriathi Athieq., The Analysis Of Safety Mirror Placement For Traffic Safety At Trans-Sulawesi National Highway. Aust. J. Basic & Appl. Sci., 11(10): 41-47, 2017 The Analysis Of Safety Mirror Placement For Traffic Safety At Trans- Sulawesi National Highway 1 Lambang Basri Said, 2 Muhtar Tahir, 3 Maryam Hapram, 4 Qadriathi Athieq 1 Lambang Basri Said, Lecturer Faculty of Engineering University Moslem Indonesia, 90231, Makassar, South Sulawesi, Indonesia Fax: +62411-428122 2 Muhtar Tahir, Lecturer, Road & Transportation Research Center, Universitas Muslim Indonesia,90231 Makassar, South Sulawesi, Indonesia, Fax: +62411-428122 3 Maryam Hapram, Lecturer, Road & Transportation Research Center Universitas Muslim Indonesia 90231 Makassar South Sulawesi, Indonesia Fax: +62411-428122 4 Qadriathi Athieq Lecturer Road & Transportation Research Center Universitas NegeriMakassar90233 Makassar South Sulawesi, Indonesia Fax: +62411-428122 Address For Correspondence: Lambang Basri Said, 1Lambang Basri Said, Lecturer Faculty of Engineering University Moslem Indonesia, 90231, Makassar, South Sulawesi, Indonesia Fax: +62411-428122 ARTICLE INFO ABSTRACT Article history: Received 28 May 2017 Accepted 22 July 2017 Available online 26 July 2017 Keywords: Safety Mirror, Safety, Traffic Research was aimed (1) to analyze the placement, installation, and work mechanism of Safety Mirror along Majene-Mamuju RegenciesRoad in West Sulawesi, and also (2) to analyze the rate of traffic accident occuring along Majene-Mamuju Regencies Road after the placement of Safety Mirror. Methodology of research was quantitative. Type of research was explanatory research with cross-sectional approach.Safety Mirrormechanism involved the application of convex mirror and its precision was calculated with Gauss Formula. Result of research indicated several findings. (1) The location of placement and installation of Safety Mirror at Majene-Mamuju Axis Road was set from R 13 m to 20 m and from D 110.2 o to 7.16 0 . However, it did not align with Safety Mirror mechanism as an instrument keeping the driver to stay alert against other vehicle in front of the curve at very wide sight field. Because the length of image was smaller, the vehicle in front of the curve was seen far away than its actual distance. The driver felt necessary to interpret the actual distance based on image sight from Safety Mirror. (2) The number of accident after Safety Mirror installation decreased by 35.48% in 5-year period. The presence ofSafety Mirror helped the driver to predict the required sight distance, and it succesfully converted critical curve or dangerous bend into safe turnoff to prevent the occurence of traffic accident. INTRODUCTION Majene-Mamuju Axis Road at Trans-Sulawesi National Highway was vulnerable to the conflicting traffic occurence because this road had developed into a highway region connecting Mamuju, Central Sulawesi, North Sulawesi, and several sea harbors toward Kalimantan and Java. Some internodes along this national highway contained sharp curve and very challenging gradient of alignment. Gorge and steep slope ornamented one side of the road. Some trees and hills might cover up sight distance. Ascents and descents were quite frightening.All of these were the natural factors that must be highly attended in managing the traffic. The length of Trans-Sulawesi Highway network was 597.78 km which connected surrounding districts and regencies. The general condition of road was usually good and ready to pass. However, anticipating the congestion and also the rush hour due to the passing vehicles from other regencies and other provinces, then the supporting structure was needed. One internode that was vulnerable to the conflicting traffic was Majene- Mamuju Axis Road at Km 347-Km 393.