Effects of Weather on Highway Traffic Capacity in China: Characteristics and Causes of Roadblocks Due to Fog Events

Jiang, Ying; Zhang, Nan; Li, Aixun; Wu, Hao; Run-chun, LI; Yang, Jin-Ling

doi:10.1007/s00024-020-02535-8

Cited by 8 publications

(5 citation statements)

References 24 publications

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“…Caceres et al developed an efective probability model utilizing ETC toll data to estimate the distribution of travel times on highways under diferent weather conditions [53]. Disastrous weather events like typhoons and storm surges bring destructive impacts to transportation [22,[54][55][56]. Additionally, rainfall exerts a more pronounced efect on residents' daily travel patterns [23,57], causing delays during normal travel times and infuencing drivers' moods, resulting in changes to the spatiotemporal distribution of trafc demand [58][59][60].…”

Section: Impact Of Weather On Transportation Systemsmentioning

confidence: 99%

The Association between Rainfall and Taxi Travel Activities: A Case Study from Wuhan, China

Chen,

Liu,

Gao

2024

Journal of Advanced Transportation

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Rainfall has a significant impact on urban population mobility, posing great challenges to traffic management and urban planning. An understanding of this influence from multiple perspectives is urgently needed. In this study, we devised a multiscale comparative research framework to explore the spatiotemporal effects of rainfall on taxi travel patterns, aiming to provide a new perspective on the investigation of rainfall’s impact on urban human mobility. More specifically, at the macroscopic scale, we computed taxi travel indicators across the entire study area and used kernel density estimates to observe the spatiotemporal distribution patterns influenced by rainfall. Subsequently, complex traffic networks were constructed by considering urban road intersections as nodes and combined with visualization methods to understand changes in taxi travel patterns visually at the microscopic level. We selected Wuhan City, a typical urban area in southern China with frequent rainfall, as the study area and used meteorological data along with a large volume of taxi spatiotemporal trajectory data for investigation. Results indicated a 4.16% decrease in weekly travel volume due to rainfall, with a 3.96% decrease on workdays and a 4.64% decrease on weekends. However, nighttime rainfall between 19:00 and 22:00 on weekdays increased the demand for taxi travel. Furthermore, the impact of rainfall on weekends exceeded that on workdays, restricting people’s mobility and leisure activities, resulting in reduced travel to recreational tourist spots and commercial pedestrian streets. Rainfall altered residents’ travel preferences to some extent, with more residents choosing taxis during rainy weather, which led to decreased transportation efficiency and increased traffic congestion. These findings contribute to a deeper understanding of the complex relationship between population mobility patterns and the urban ecological environment, providing valuable insights for planning resident travel and taxi dispatching under adverse weather conditions.

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Section: Impact Of Weather On Transportation Systemsmentioning

confidence: 99%

The Association between Rainfall and Taxi Travel Activities: A Case Study from Wuhan, China

Chen,

Liu,

Gao

2024

Journal of Advanced Transportation

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“…This phenomenon is commonly seen in mines located within subarctic and tropical regions [6], Notably, certain mines in China also experience artificially induced fog [7][8][9]. From June to August each year, the main air intake roadway of the Wangjialing mine in Shanxi Province suffers from severe fog hazards which cause low visibility inside the roadway, seriously affecting the safety of mine personnel and vehicle traffic [10][11][12][13][14][15][16]. In addition, foggy environments can reduce the productivity of mine personnel in their work, and allow pollutants to remain in the air for long periods of time, which can be detrimental to the health of mine personnel [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Conditions of Fog Generation and the Change Rule of Fog Zone Length in Air Intake Roadway

Wu,

Zhu,

Zhang

et al. 2024

Sustainability

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Fog in mine air intake roadways is a non-negligible disaster that seriously reduces the visibility of the roadway, affects vehicle transportation and the safe passage of personnel, and jeopardizes the safe production of the mine. This paper applies both field testing and numerical simulation to explore fog formation conditions and the effects of inlet air temperature and humidity on the fog zone length within the Wangjialing Mine’s air intake roadway in Shanxi, China. First, based on the consideration of the relationship between the moisture gain of surrounding rock and the temperature with humidity of the air flow, the fog generation and distribution law model of the air intake roadway was established. Based on this model, the critical inlet air temperature and the critical inlet air relative humidity for fogging in the Wangjialing Mine air intake roadway were determined. In addition, we found that the fogging point inside the roadway shifted forward continuously with the increase in inlet air temperature and inlet air relative humidity, and the length of the fog zone expands parabolically in response to these rising conditions.

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“…With ab increasing road network density and the changing climate environment, the impacts of fog on expressway traffic safety and traffic efficiency are becoming increasingly serious. In China, the accumulated mileage blocked by fog is 1.78 times the total national expressway mileage per year on average [3,4].…”

Section: Introductionmentioning

confidence: 99%

Study on Risk Prediction Model of Expressway Agglomerate Fog-Related Accidents

et al. 2023

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Based on meteorological observations, traffic flow data and information of traffic accidents caused by fog or agglomerate fog along the expressways in Jiangsu Province and Anhui Province in China from 2012 to 2021, key impact factors including meteorological conditions, road hidden dangers and traffic flow conditions are integrated to establish the prediction model for risk levels of expressway agglomerate fog-related accidents. This model takes the discrimination of the occurrence conditions of agglomerate fog as the starting term, and determines the hazard levels of agglomerate fog-related accidents by introducing the probability prediction value of meteorological conditions for fog-related accident as the disaster-causing factor. On this basis, the hourly road traffic flow and the location of road sections with a hidden danger of agglomerate fog are taken as traffic and road factors to construct the correction scheme for the hazard levels, and the final predicted risk level of agglomerate fog-related accident is obtained. The results show that for the criteria of disaster-causing factor classification threshold, 72.3% of fog-related accidents correspond to a hazard of a medium level or above, and 86.2% of the road traffic flow conditions are consistent with the levels of the traffic factor defined based on parametric indexes. For risk level prediction, six out of the seven agglomerate fog-related accidents correspond to the level of higher risk or above, which can help provide meteorological support for traffic safety under severe weather conditions. Moreover, the model takes into account the impacts of traffic flow and the road environment, which is conducive to further improving the reliability of the risk assessment results.

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Effects of Weather on Highway Traffic Capacity in China: Characteristics and Causes of Roadblocks Due to Fog Events

Cited by 8 publications

References 24 publications

The Association between Rainfall and Taxi Travel Activities: A Case Study from Wuhan, China

The Association between Rainfall and Taxi Travel Activities: A Case Study from Wuhan, China

A Study on the Conditions of Fog Generation and the Change Rule of Fog Zone Length in Air Intake Roadway

Study on Risk Prediction Model of Expressway Agglomerate Fog-Related Accidents

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