PURPOSES: This study analyzes the available working time at work-zone on the Expressway in accordance to the new capacity manual. METHODS: Sensitivity analysis on variables were conducted to calculate the adjusted capacity at work-zone based on previous researches. RESULTS : The main factors which affect available working time at the work-zone were its capacity, number of lanes, terrain and lane width. Other factors have minimal effect on the available working time. Based on the analysis, a calendar of lane closures was suggested. CONCLUSIONS : A series of studies concluded that the capacity at work-zone in the new capacity manual reduced to 76-82% of the existing manual. As such, the available working time decreased. Furthermore, the factors affecting the available working time needs to be considered when making a plan to rehabilitate the distressed pavement.

• 류성우(한국도로공사 도로교통연구원 도로연구실 박사후연구원) | Ryu, SungWoo
• 박권제(한국도로공사 교통본부장) | Park, Kwon-Jea 교신저자
• 한승환(한국도로공사 도로교통연구원 수석연구원) | Han, SeungHwan
• 조윤호(중앙대학교 공과대학 사회기반시스템공학부 교수) | Cho, Yoon-Ho