An Urgent Traffic Dispersion and Assignment Model for Urban Road Flooding

Many work zones exist in the urban road network and have a great negative impact on city traffic. Finding the optimal work zone schedule can minimize the negative impact of work zones on traffic. This paper focuses on the day-based work zone scheduling problem in the urban network. Existing studies on the day-based work zone scheduling problem do not consider the progression of day-to-day traffic from a non-equilibrium state to an equilibrium state during the construction period. For the first time, this paper proposes a model for day-based work zone scheduling by introducing a day-to-day traffic assignment model, in which the target of the optimization problem is minimizing the increase in travel cost caused by work zones. Numerical examples are presented to explore the variations of the optimal construction sequence for different work durations, crew numbers, and model parameter values. Some new findings are obtained in the paper. When the construction duration of each work zone is relatively short (for example, less than 20 days), the optimal scheduling will obviously change with the work duration; when all of the construction durations increase to a threshold (for example, 60 days), the optimal construction sequence will no longer change. An optimal crew number exists that can minimize the increment of travel cost caused by work zones. During the construction period, the total travel cost in the network can be decreased by guiding travelers to change their original travel habits.

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A within-day dynamic traffic assignment model for urban road networks

Transportation Research Part B Methodological ◽

10.1016/j.trb.2004.02.002 ◽

2005 ◽

Vol 39 (1) ◽

pp. 1-29 ◽

Cited By ~ 39

Author(s):

Giuseppe Bellei ◽

Guido Gentile ◽

Natale Papola

Keyword(s):

Traffic Assignment ◽

Dynamic Traffic Assignment ◽

Road Networks ◽

Dynamic Traffic ◽

Urban Road ◽

Assignment Model

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Development of an User Equilibrium Assignment Model for an Urban Road Network Including Expressways.

Doboku Gakkai Ronbunshu ◽

10.2208/jscej.2000.653_85 ◽

2000 ◽

pp. 85-94 ◽

Cited By ~ 2

Author(s):

Hiroshi MATSUI ◽

Motohiro FUJITA

Keyword(s):

Road Network ◽

User Equilibrium ◽

Urban Road Network ◽

Urban Road ◽

Assignment Model ◽

Equilibrium Assignment

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Dynamic Traffic Assignment Model Based on GPS Data and Point of Interest (POI) in Shanghai

Sensors ◽

10.3390/s21217341 ◽

2021 ◽

Vol 21 (21) ◽

pp. 7341

Author(s):

Xueying Song ◽

Zheng Yang ◽

Tao Wang ◽

Chaoyang Li ◽

Yi Zhang ◽

...

Keyword(s):

Traffic Flow ◽

Road Network ◽

Traffic Assignment ◽

Trajectory Data ◽

Dynamic Traffic ◽

Urban Road ◽

Assignment Model ◽

Flow Assignment ◽

Gps Trajectory Data ◽

Gps Trajectory

Dynamic traffic flow, which can facilitate the efficient operation of traffic road networks, is an important prerequisite for the application of reasonable assignment of traffic demands in an urban road network. In order to improve the accuracy of dynamic traffic flow assignment, this paper proposes a dynamic traffic flow assignment model based on GPS trajectory data and the influence of POI. First, this paper explores the impact patterns of POI on regional road network congestion during peak hours through qualitative and quantitative analysis. Then, based on the user equilibrium theory, a dynamic traffic flow assignment model, in which the effect of POI on links is reflected using the link-node impedance function, is proposed. Finally, the accuracy of the model is validated by the GPS trajectory data and origin–destination (OD) traffic data of motor vehicles in Xuhui District, Shanghai, China. The results show that the model can be used to coordinate and optimize the traffic assignment of the regional road network under the influence of POI during peak hours and alleviate the congestion of the road network. The findings can provide a powerful reference for developing scientific and rational traffic assignment decisions and management strategies for urban road network traffic.

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