Analyzing the Safety Impact of Tunnel Traffic Safety Facilities Using Structural Equation Modeling

Borim Choi; Younshik Chung; Sangsu Kim; Junggeun Kim

doi:10.7470/jkst.2026.44.1.053

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2026 Vol.44, Issue 1 Preview Page Next Page

Article

Analyzing the Safety Impact of Tunnel Traffic Safety Facilities Using Structural Equation Modeling 구조방정식 모형 기반 터널 교통안전시설 유형별 안전 기여도 분석

28 February 2026. pp. 53-64

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Abstract

Recently, due to the construction of new tunnels, the extension of existing tunnels, and the construction of underground expressways, the demand for introducing advanced technologies to enhance tunnel traffic safety measures has increased. The traffic safety facility currently deployed in domestic tunnels contribute to traffic safety in different ways, depending on their specific characteristics. A better understanding of how each facility enhances safety can lead to more efficient utilization. Therefore, this study examines the characteristics of key traffic safety facility—VMS (Variable Message Sign), LCS (Lane Control System), VGS (Voice Guidance System), and LEDLS (Light Emitting Diode Lighting System)—used in domestic tunnels, with the aim of identifying their individual contributions to traffic safety and laying the groundwork for their effective use. To this end, a survey was conducted among drivers who had experienced the tunnel traffic safety facility to analyze the relationship between drivers’ 'awareness', 'need', and 'acceptance' of the facility, and the facility’s 'safety effectiveness'. As a result, it was found that 'awareness' of the facility had a positive effect on 'need', and 'need' had a positive effect on 'acceptance'. In addition, it was found that the 'safety effectiveness' varied depending on the purpose of the facility installation. In the case of facilities whose main purpose is to ‘provide traffic situation information’ to drivers (VMS, LCS), the 'need' for the facility had a positive indirect effect on 'safety effectiveness' through 'acceptance', and 'acceptance' had a direct effect on 'safety effectiveness'. On the other hand, in the case of facilities whose main purpose is to ‘attention-raise drivers’ (VGS, LEDLS), the 'need' for the facility had a direct effect on 'safety effectiveness', and 'acceptance' did not seem to affect 'safety effectiveness'.

Keywords

safety effectiveness

structural equation modeling

tunnel traffic safety facility

tunnel traffic safety

safety effectiveness analysis

최근 터널 신설 및 장대화, 지하고속도로 건설 등으로 인해 터널 교통안전 대책 마련을 위한 첨단 기술 도입 요구가 증가하고 있다. 이에 한국도로공사에서는 터널 교통안전시설을 도입하여 안전한 도로 환경을 조성하고자 노력을 기울였고, 지난 10년간 국내 터널 교통사고 발생률은 연평균 1.7% 감소하였다. 그러나 같은 기간 사망자 수는 증가하여 보다 효과적인 터널 교통안전 대책 마련이 필요한 실정이다. 현재 국내 터널에 구축된 교통안전시설은 각 시설별 특성에 따라 교통안전에 기여하는 정도가 다르게 나타날 것이며, 각 시설별 특성에 따른 교통안전 기여도를 파악함으로써 시설의 효율적인 활용 가능성이 증가할 것이다. 이에 본 연구에서는 국내 터널에 구축된 주요 교통안전시설인 교통안전표지판, 차로제어시스템, 음성안내시스템, LED 면조명시스템의 특성을 고려하여 시설별 교통안전 기여도를 파악함으로써 개별 시설의 효율적 활용을 위한 기반을 마련하고자 한다. 이를 위해 터널에 설치된 주요 교통안전시설을 경험한 운전자를 대상으로 설문조사를 수행하여 각 시설에 대한 운전자들의 ‘인지도’, ‘필요성’, ‘수용도’가 ‘교통안전 기여도’에 미치는 영향 관계를 파악하였다. 그 결과, 운전자에게 ‘교통상황 정보 전달’이 주목적인 시설의 경우, 시설에 대한 필요성은 수용도를 매개하여 교통안전 기여도에 긍정적인 간접영향을, 수용도는 교통안전 기여도에 긍정적인 직접영향을 미치는 것으로 나타났다. 반면, ‘운전자 주의 환기’가 주목적인 시설의 경우, 시설에 대한 필요성은 교통안전 기여도에 긍정적인 직접영향을 미치는 것으로 나타났으며, 수용도는 교통안전 기여도에 영향을 미치지 않는 것으로 나타났다.

키워드

교통안전 기여도

구조방정식 모형

터널 교통안전시설

터널 교통안전

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Information

Publisher :Korean Society of Transportation
Publisher(Ko) :대한교통학회
Journal Title :Journal of Korean Society of Transportation
Journal Title(Ko) :대한교통학회지
Volume : 44
No :1
Pages :53-64
Received Date : 2025-10-15
Revised Date : 2025-11-07
Accepted Date : 2025-12-10
DOI :https://doi.org/10.7470/jkst.2026.44.1.053

Journal of Korean Society of Transportation ISSN:1229-1366(Print) 2234-4217(Online) 대한교통학회지

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