Robust Optimal Lane Allocation for Isolated Intersections

Yu, Chunhui; Ma, Wanjing; Lo, Hong Kam; Yang, Xiaoguang

doi:10.1111/mice.12236

Cited by 19 publications

(9 citation statements)

References 51 publications

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“…With the comparison with the deterministic linear programming model, it shows that the proposed stochastic programming model can reduce total vehicle delay and queue length, and improve throughput. Yu et al [38] proposed a robust optimization model for the integrated design of lane allocation and signal timing for isolated intersections. Hao et al [39] proposed a robust optimization model of signal timing for unsaturated intersections.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Since the objective function is non-convex and nondifferentiable [23], [54], [55] and the model contains nonlinear constraints, it is difficult to solve by traditional optimization algorithms. A heuristic algorithm is often used to solve this problem [38], [56], [57]. Therefore, this model was figured out based on the genetic algorithm (GA) in this paper, and the procedure is shown below.…”

Section: B Constraints 1) Calculation Of the Vehicular Delaymentioning

confidence: 99%

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Robust Signal Control of Exit Lanes for Left-Turn Intersections With the Consideration of Traffic Fluctuation

et al. 2020

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Traffic throughput at intersections can be improved by using exit lanes for left-turning (EFL), tidal flow lanes near an intersection, which has been recently introduced. This paper considers the operational robustness of the EFL intersection in relation to the control scheme applied to the traffic light setting. For safety and efficiency, it is important that the tidal lanes are emptied before traffic in the opposing direction uses these lanes. Hence, the signal control should not only be optimized for the mean value but be robust for all kinds of fluctuations. This paper formulates a traffic control scheme using robust optimization, i.e. an optimization scheme which explicitly accounts for extreme events. The fluctuation of traffic is considered from three aspects: the distribution of traffic demand, the distribution of base saturation flow rate, and the distribution of actual travel speed. Via a case study and extensive numerical analysis, we find that the established robust optimization method produces an efficient design of signal control and design speed at the EFL intersection under traffic demand and supply fluctuations. Though the optimization method is now applied to intersections with an EFL, it is considered useful for all intersections with high fluctuation of traffic demand and saturation flow rate. INDEX TERMS Exit-lanes for left-turn intersection, robust optimization, signal control, unconventional intersections.

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Section: Literature Reviewmentioning

confidence: 99%

Section: B Constraints 1) Calculation Of the Vehicular Delaymentioning

confidence: 99%

Robust Signal Control of Exit Lanes for Left-Turn Intersections With the Consideration of Traffic Fluctuation

et al. 2020

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“…Model [M2] can be solved by a mixed‐integer linear programming solver such as CPLEX (González et al., ; Maghrebi et al., ; Rashidi et al., ; Xie and Jiang, ; Zhao et al., ; Zockaie et al., ; Yu et al., ).…”

Section: Model Formulation and Algorithmmentioning

confidence: 99%

Mixed‐Integer Linear Programming on Work‐Rest Schedule Design for Construction Sites in Hot Weather

Wang

2017

Computer aided Civil Eng

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An appropriate design of work-rest schedule is recognized as an efficient way in providing better ergonomic environment, improving labor productivity as well as safety. Construction workers usually undertake physically demanding tasks in an outdoor environment, with awkward postures and repetitive motions. This study proposes a mixed-integer linear programming approach to optimize the work-rest schedule for construction workers in hot weather for the objective of maximizing the total productive time. The model takes into consideration the physical and physiological conditions of the workers, the working environment, the nature of the jobs and the minimum rest duration of the government regulation. The results of numerical experiments show that the proposed model outperforms a default work-rest schedule by up to 10% in terms of total productive time. This implies considerable cost savings for the construction industry. C 2017 Computer-Aided Civil and Infrastructure Engineering.

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“…This design concept has been successful in designing individual signalized intersections [17]. Intersection capacity has been increased significantly if lane markings and traffic signal settings are optimized in a unified framework [18][19][20][21].…”

Section: Discrete Dynamics In Nature and Societymentioning

confidence: 99%

Lane-Based Optimization for Macroscopic Network Configuration Designs

Wong

Liu

2017

Discrete Dynamics in Nature and Society

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Lane markings (arrows) at individual intersections serve as interfaces to connect upstream and downstream intersections in signal-controlled networks. Demand flows from origins to destinations may need to pass through a series of intersections. If lane markings are not well established to ban turns at intersections, then paths connecting origin and destination (OD) pairs could be inefficient. Due to indirect connections, road users need to take longer paths to reach their destinations. Conventionally, network configurations are fixed inputs for network analysis. In the present study, concepts of the lane-based designs for individual signalized intersections are extended for signal-controlled network designs. Taking OD demand flows as inputs, the proposed algorithm will optimize all lane markings and assigned lane flows on approach lanes. Paths (flows) will then be optimized by linking up the optimized lane markings across upstream and downstream intersections. Traffic signal settings at individual intersections will be optimized simultaneously by maximizing the reserve capacity for the entire OD demand flow matrix. The problem is formulated as a Binary-Mixed-Integer-Linear-Program (BMILP) and a standard branch-and-bound routine is applied to solve for global optimum solutions. A numerical example using a 4-intersection network will be given to demonstrate the effectiveness of the proposed design methodology.

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Robust Optimal Lane Allocation for Isolated Intersections

Cited by 19 publications

References 51 publications

Robust Signal Control of Exit Lanes for Left-Turn Intersections With the Consideration of Traffic Fluctuation

Robust Signal Control of Exit Lanes for Left-Turn Intersections With the Consideration of Traffic Fluctuation

Mixed‐Integer Linear Programming on Work‐Rest Schedule Design for Construction Sites in Hot Weather

Lane-Based Optimization for Macroscopic Network Configuration Designs

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