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Home > Vol 33, No 1 (2023) > Sapprasert

Application of Geographic Information System for Analyses the Road Accident Susceptibility: A Case Study the Kathu District Phuket Province

Pichayes Sapprasert, Wilaipan Khongsawat, Thongchai Suteerasak

Abstract


งานวิจัยนี้มีวัตถุประสงค์เพื่อวิเคราะห์พื้นที่เสี่ยงอุบัติเหตุบนถนนใน อำเภอกะทู้ จังหวัดภูเก็ตโดยใช้ระบบสารสนเทศภูมิศาสตร์ วิธีการที่ใช้ในการวิเคราะห์พื้นที่เสี่ยงอุบัติเหตุบนถนนใช้การวิเคราะห์แบบลำดับชั้น (AHP) และวิธีการประมาณค่าความหนาแน่น (Kernel density estimation) ซึ่งการจัดทำแผนที่ความเสี่ยงอุบัติเหตุเชิงพื้นที่อาศัยการวิเคราะห์แบบลำดับชั้นโดยใช้ปัจจัยเชิงพื้นที่ 3 ปัจจัย ได้แก่ ความลาดชัน สภาพถนนและสภาพแวดล้อมของถนน ส่วนแผนที่ความหนาแน่นอุบัติเหตุใช้ข้อมูลจำนวนอุบัติเหตุทางถนนระหว่าง ปี พ.ศ. 2557-2562 โดยใช้วิธีการประมาณค่าความหนาแน่น ผลการศึกษาพบว่า มีความสอดคล้องและไม่สอดคล้องกันของความหนาแน่นอุบัติเหตุและปัจจัยเสี่ยงเชิงพื้นที่ พื้นที่ถนนที่พบความสอดคล้องกันดังกล่าวมีน้อยกว่าผลที่พบความไม่สอดคล้องกัน ผลที่ไม่สอดคล้องกันมากที่สุดพบตรงกันทั้ง 3 ตำบล คือ “ความเป็นพื้นที่เสี่ยงมากแต่ไม่พบการเกิดอุบัติเหตุ” อย่างไรก็ตามพื้นที่พบความสอดคล้องกันส่วนใหญ่ในพื้นที่มีความลาดชันและมีเส้นทางคดโค้งจำนวนมาก โดยทั้ง 3 ตำบลมีความหนาแน่นของอุบัติเหตุมากที่สุดที่เหมือนกันบริเวณทางแยกและทางตรง

This research aims to analyze the road accident risk areas in Kathu district, Phuket province by using the Geographic information system technique. Two main methods used were Analysis Hierarchy Process (AHP) and Kernel density estimation. Spatial road accident susceptibility map was produced by the AHP method. Three factors, i.e. slope, road condition and road environment were employed. According to Kernel density estimation, the number of road accidents during 2014–2019 were used for obtaining the map of accident density. The results showed consistency and inconsistency of accidental intensities and spatial risk factors. The road areas with conformity of both maps were lower than those with nonconformity. The most inconsistent outcomes were found in 3 sub-districts, the so called "the accident susceptibility areas, yet with no such occurrence." However, the consistent road areas were located mainly in the areas with steep slopes and crooked paths. All three sub-districts have the highest accident density at the main road and intersections area.


Keywords



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Full Text: PDF

DOI: 10.14416/j.kmutnb.2022.08.006

ISSN: 2985-2145