Predicting the water film depth: A model based on the geometric features of road and capacity of drainage facilities

The water film depth is a key variable that affects traffic safety under rainfall conditions. According to the Federal Highway Administration, approximately 5700 people are killed and more than 544 700 people are injured in crashes on wet pavements annually. While several studies have attempted to a...

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Veröffentlicht in:PloS one 2021-07, Vol.16 (7), p.e0252767
Hauptverfasser: Han, Shuo, Xu, Jinliang, Yan, Menghua, Gao, Sunjian, Li, Xufeng, Huang, Xunjiang, Liu, Zhaoxin
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Liu, Zhaoxin
description The water film depth is a key variable that affects traffic safety under rainfall conditions. According to the Federal Highway Administration, approximately 5700 people are killed and more than 544 700 people are injured in crashes on wet pavements annually. While several studies have attempted to address water film depth issues by establishing prediction models, a few focused on the relationship among road geometric features, capacity of drainage facilities and water film depth. To ascertain the influence of the geometric features of road and facility drainage capacities on the water film depth, the road geometry features were first classified into four types, and the facility drainage capacities were considered from three aspects in this study. Furthermore, the concept of short-time rainfall grade was proposed according to the results of the field test. Finally, the theoretical prediction model for the water film depth was conceived, based on the geometric features of road and facility drainage capacities with different rainfall intensities. Compared with the traditional regression prediction models, the theoretical prediction model clearly shows the effects of the geometric features of road and facility drainage capacities. When the road drainage facilities have no drainage capacity, the water film depth increases rapidly with the rainfall intensity. This model can be used to predict the water film depth of road surfaces on rainy days, evaluate the effect of rainfall on the driving environment, and provide guidance for determining safety control measures on rainy days.
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According to the Federal Highway Administration, approximately 5700 people are killed and more than 544 700 people are injured in crashes on wet pavements annually. While several studies have attempted to address water film depth issues by establishing prediction models, a few focused on the relationship among road geometric features, capacity of drainage facilities and water film depth. To ascertain the influence of the geometric features of road and facility drainage capacities on the water film depth, the road geometry features were first classified into four types, and the facility drainage capacities were considered from three aspects in this study. Furthermore, the concept of short-time rainfall grade was proposed according to the results of the field test. Finally, the theoretical prediction model for the water film depth was conceived, based on the geometric features of road and facility drainage capacities with different rainfall intensities. Compared with the traditional regression prediction models, the theoretical prediction model clearly shows the effects of the geometric features of road and facility drainage capacities. When the road drainage facilities have no drainage capacity, the water film depth increases rapidly with the rainfall intensity. 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Compared with the traditional regression prediction models, the theoretical prediction model clearly shows the effects of the geometric features of road and facility drainage capacities. When the road drainage facilities have no drainage capacity, the water film depth increases rapidly with the rainfall intensity. This model can be used to predict the water film depth of road surfaces on rainy days, evaluate the effect of rainfall on the driving environment, and provide guidance for determining safety control measures on rainy days.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>34214083</pmid><doi>10.1371/journal.pone.0252767</doi><tpages>e0252767</tpages><orcidid>https://orcid.org/0000-0002-3817-2487</orcidid><oa>free_for_read</oa></addata></record>
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subjects China
Crashes
Drainage
Drainage facilities
Earth Sciences
Engineering and Technology
Environmental aspects
Experiments
Field tests
Floods
Friction
Highway safety
Humans
Influence
Management
Measurement
Medicine and Health Sciences
Models, Theoretical
Physical Sciences
Prediction models
Rain
Rain and rainfall
Rainfall
Rainfall intensity
Regression analysis
Research and Analysis Methods
Research methodology
Roads
Roads & highways
Simulation
Structure
Traffic accidents & safety
Traffic safety
Transportation planning
Water
Water depth
Water film
title Predicting the water film depth: A model based on the geometric features of road and capacity of drainage facilities
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