TY - JOUR
T1 - Optimal operation of displaced left-turn intersections
T2 - A lane-based approach
AU - Zhao, Jing
AU - Ma, Wanjing
AU - Head, K. Larry
AU - Yang, Xiaoguang
N1 - Funding Information:
The research is supported by the National Natural Science Foundation of China under Grant Nos. 51238008 and 51178345 , and the project of Science and Technology Commission of Shanghai Municipality No. 13510501700 .
PY - 2015/12/1
Y1 - 2015/12/1
N2 - Displaced left-turn (DLT) intersections that resolve the conflict between left-turn and opposing-through movements at the pre-signal are probably the most extensively used innovative intersection designs. The DLT intersection concept can be extended to ten different types according to the location of the left-turn transition area, the number of DLT approaches, and the possible setting of the bypass right-turn lane. This paper presents a generalized lane-based optimization model for the integrated design of DLT intersection types, lane markings, the length of the displaced left-turn lane, and the signal timings. The optimization is formulated as a mixed-integer non-linear program. This program is further transformed to a series of mixed-integer linear programming problems that can be solved by the standard branch-and-bound technique. Results from extensive numerical analyses reveal the effectiveness of the proposed method, as well as the promising property of assisting transportation professionals in the proper selection of DLT intersection types, and the design of geometric layout and signal timings.
AB - Displaced left-turn (DLT) intersections that resolve the conflict between left-turn and opposing-through movements at the pre-signal are probably the most extensively used innovative intersection designs. The DLT intersection concept can be extended to ten different types according to the location of the left-turn transition area, the number of DLT approaches, and the possible setting of the bypass right-turn lane. This paper presents a generalized lane-based optimization model for the integrated design of DLT intersection types, lane markings, the length of the displaced left-turn lane, and the signal timings. The optimization is formulated as a mixed-integer non-linear program. This program is further transformed to a series of mixed-integer linear programming problems that can be solved by the standard branch-and-bound technique. Results from extensive numerical analyses reveal the effectiveness of the proposed method, as well as the promising property of assisting transportation professionals in the proper selection of DLT intersection types, and the design of geometric layout and signal timings.
KW - Capacity
KW - Displaced left-turn intersections
KW - Integrated design
KW - Mixed-integer-non-linear-program
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U2 - 10.1016/j.trc.2015.10.012
DO - 10.1016/j.trc.2015.10.012
M3 - Article
AN - SCOPUS:84946416944
VL - 61
SP - 29
EP - 48
JO - Transportation Research Part C: Emerging Technologies
JF - Transportation Research Part C: Emerging Technologies
SN - 0968-090X
ER -