Optimal subwork zone operational strategy for short‐term work zone projects in four‐lane two‐way freeways

Meng, Qiang; Weng, Jinxian

doi:10.1002/atr.153

Cited by 14 publications

(5 citation statements)

References 14 publications

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“…A number of previous studies have focused on multilane work zone capacity and queue estimation [6][7][8][9][10], in order to reduce delay and promise total cost optimization [11][12][13][14]. However, multilane work zones are quite different from the scenarios in this paper.…”

Section: Literature Reviewmentioning

confidence: 97%

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Control Strategy Optimization for Two-Lane Highway Lane-Closure Work Zones

Hua

Wang

et al. 2019

Sustainability

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Traffic control is very important for two-lane highway lane-closure work zone traffic management. Control of the open lane’s right of way is very similar to that of a two-phase signalized intersection. Thus, four control strategies including flagger control, pre-timed control proposed by Schonfeld, pre-timed control proposed by Webster, and actuated control are employed for possible use at work zones. Two primary methodologies, the mathematical delay model adopted from signalized intersections, and the simulation model calibrated with field data, are proposed. The simulation and mathematical results show that control strategies for two one-way road intersections could be used for two-lane highway lane-closure work zones. Flagger control after gap-out distance optimization prevails over all the other control strategies in terms of stopped delay, queue length, and throughput, under low or high volumes. Actuated control could be a good alternative for work zone areas due to its small queue length and large vehicle throughput under moderate volume conditions. Our findings may help to optimize the work-zone control strategy and improve operational efficiency at two-lane highway lane-closure work zones.

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Section: Literature Reviewmentioning

confidence: 97%

“…Solving Equations (8) and 9, G 1 and G 2 can be obtained, as shown in Equations 1and 2. The deterministic stopped delay time per cycle for directions 1 and 2 (Y 1,1 and Y 1,2 , respectively), and deterministic stopped delay time in mean vehicle delay (d 1,1 and d 1,2 ) can be calculated by Equations (10) and 11:…”

Section: Mathematical Model Developmentmentioning

confidence: 99%

Control Strategy Optimization for Two-Lane Highway Lane-Closure Work Zones

Hua

Wang

et al. 2019

Sustainability

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“…The calculation of the route flows and travel times is iterative. Given travel times on the two routes, route flows are calculated using Equations ( 23) and (24). The flow demands that arrive to the HWZ section (Q up t,d ) are used to calculate updated section travel times and queue delays through the HWZ and the alternative route.…”

Section: Lost Time Costmentioning

confidence: 99%

An Optimization Model for Highway Work Zones Considering Safety, Mobility, and Project Cost

et al. 2022

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Highway Work Zones (HWZs) are associated with significant adverse impacts on safety, mobility, and work costs. The objective of this paper is two-fold: First, to quantify the impacts of HWZs on safety, mobility, and work costs. Second, to develop an optimization model to minimize the total costs associated with HWZs by controlling site geometry, Temporary Traffic Control (TTC), and work management. This model implements a location-based schedule within the cost evaluation. A genetic algorithm is used to determine a set of optimal scheduling and decision variables. The performance of the model is demonstrated in a case study. The results reveal that crash costs, which were often ignored or only included indirectly in previous works, are a substantial cost component. Their explicit inclusion in the optimization process significantly affects the total cost and the optimal operations of the HWZ. Furthermore, the inclusion of a location-based schedule in the model is instrumental and affects the optimal solution since all HWZ cost components are affected by the work processes and project duration. Moreover, consideration of the effects of TTC on the optimized function has a substantial influence on the total cost. The model can support transportation agencies and local authorities in mitigating the adverse impacts associated with HWZs.

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“…However, it should be pointed out that the delay cost estimation formula used in their work should be remedied when the queue vanished within a time interval. To improve the accuracy of the estimation formula, Meng et al [11] designed a model in terms of a time window constraint to examine the impact of unequal sub-work-zone lengths with an actual roadside tree trimming project. Huang et al [12] applied a trial-and-error method to find the optimal work zone length and the best work starting time to minimize the total cost of maintenance and delays.…”

Section: Relevant Studiesmentioning

confidence: 99%

Optimizing Strategies for the Urban Work Zone with Time Window Constraints

2019

Self Cite

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Work zones that move with road maintenance tasks are enclosing and have caused severe traffic jams and the significant decline of road capacity. This paper proposes an intelligent-based multi-objects road maintenance optimization strategy based on a practical origin-destination (OD) matrix and complicated work schedules over a real urban road network. It focuses on the optimization of multi short-term maintenance tasks and the minimization of average travel delay for vehicles passing through. By taking the driving characteristic into account, static and dynamic variable speed limit strategies provide access to ensure safety on the working road network. Through this view, the problem was formulated as a mixed multi-object nonlinear program (MNLP) model with respect to the time window of the related sub-maintenance task. By using actual OD distribution matrix data, a series of microscopic simulated cases were conducted to test the model's validity. Moreover, sensitive analyses of types of parameters (e.g., traffic safety threshold, traffic flow and working efficiency) with an optimal solution were discussed considering five different scenarios.

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Optimal subwork zone operational strategy for short‐term work zone projects in four‐lane two‐way freeways

Cited by 14 publications

References 14 publications

Control Strategy Optimization for Two-Lane Highway Lane-Closure Work Zones

Control Strategy Optimization for Two-Lane Highway Lane-Closure Work Zones

An Optimization Model for Highway Work Zones Considering Safety, Mobility, and Project Cost

Optimizing Strategies for the Urban Work Zone with Time Window Constraints

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