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| 1 | Intelligent Speed Limit System for Safe Expressway Driving in Rainy and Foggy Weather Based on Internet of Things显示文摘The feature bends and tunnels of mountainous expressways are often affected by bad weather,specif-ically rain and fog,which significantly threaten expressway safety and traffic efficiency.In order to solve this problem,a vehicle–road coordination system based on the Internet of Things(IoT)is developed that can share vehicle–road information in real time,expand the environmental perception range of vehicles,and realize vehicle–road collaboration.It helps improve traffic safety and efficiency.Further,a vehicle–road cooperative driving assistance system model is introduced in this study,and it is based on IoT for improving the driving safety of mountainous expressways.Considering the influence of rain and fog on driving safety,the interaction between rainfall,water film,and adhesion coefficient is analyzed.An intelligent vehicle–road coordination assistance system is constructed that takes in information on weather,road parameters,and vehicle status,and takes the stopping sight distance model as well as rollover and sideslip model as boundary constraints.Tests conducted on a real expressway demonstrated that the assistance system model is helpful in bad weather conditions.This system could promote intelligent development of mountainous expressways. | 燕北瑞 方成 邱昊 朱文峰 | 2023 | Journal of Shanghai Jiaotong university(Science)2023，28，1： | 1 |
| 2 | Study on the Spatial Coupling between Expressway Networks and Tourist Attractions: A Case Study of Guizhou Province显示文摘Transportation is the most basic element in the development of tourism,with expressways being the main channel for tourism transportation in the era of driving tours.The relationship between transportation and tourism development has always been one of the hot topics in tourism geography study.Since the expressway service area is the main node of tourist service facilities in the expressway transportation network,we conducted a field research on 125 service areas and 177 tourist attractions in Guizhou Province,and obtained relevant data.By using the centrality measures for social network analysis,and combining the kernel density analysis with bivariate spatial autocorrelation analysis,this paper explores the centrality characteristics of expressway transportation network,the spatial distribution regularity of tourist attractions,and the spatial coupling between them.The main study conclusions are as follows:(1)The expressway service areas in Guizhou Province gradually decrease from a single core to the periphery.(2)The spatial distribution of tourist attractions presents a weak circular structure with multiple cores in a scattered manner,and the regional differences are apparent.(3)There is positive spatial correlation between the expressway networks and tourist attractions.The spatial coupling between the expressway transportation network and tourist attractions can be divided into four types of clusters:high–high cluster,high–low cluster,low–high cluster,and low–low cluster,with high–high and low–low clusters as the main types.The high–high cluster is the area with the best coupling effect and the most mature tourism.The high–low and low–high clusters have a mismatch between transportation and tourism resources.For such clusters,the spatial coupling can be realized by changing the functions of the service area or improving the quality of the tourist attraction.They have great development potential.The low–low cluster is far away from tourist attractions and markets,thus it has a small value of tourism development,and it is the critical area for future improvement.The conclusion of this study can provide a theoretical basis and scientific suggestions for promoting integrated and coordinated sustainable development of transportation and tourism. | CHEN Sihong XI Jianchao LIU Menghao | 2020 | Chinese Journal of Urban and Environmental Studies2020，8，1： | 1 |
| 3 | Cause analysis of expressway traffic accidents based on accident statistics of Hunan provincial expressway in 2012-2018显示文摘Based on the 2012–2018 accident statistics on the Hunan Provincial Expressway in China,this paper analyses the proportion to which various factors contribute to accidents,as well as the trends over time.From 2012 to 2018,the total number of general procedure handling accidents(i.e.major accidents)increased first and then decreased,while the number of accidents and deaths per 1000 kilometres decreased year by year.The total number of simple procedure handling accidents(i.e.minor accidents)increased year by year,but the number of accidents per 1000 kilometres remained relatively stable.Speeding,fatigued driving,improper driving operation,failure to maintain a safe distance from the preceding vehicle and pedestrians entering the expressway are the main causes of general procedure handling accidents.Failure to maintain a safe distance from the preceding vehicle as required and improper driving operation accounted for approximately 2/3 of the simple procedure handling accidents.In view of the accidents caused by these factors,how to use law enforcement,education,science and technology and facilities construction to further reduce the occurrence of expressway traffic accidents is discussed. | Xinyu Liu Shengjun Huang Qun Chen | 2024 | Transportation Safety and Environment2024，6，1： | 0 |
| 4 | An estimation model of time-varying origin-destination flows in expressway corridors based on unscented Kalman filter显示文摘On the basis of measurable time series of mainline and ramp flows from traffic counts and the assumption of travel time distributions, this research presents a dynamic system model and its on-line estimation algorithm for recursive estimation of time-varying origin-destination (OD) matrices in expressway corridors. The proposed model employs a macro-traffic flow model to estimate travel times of OD flows and uses parameters of the traffic model as state variables, which are added to the constrained function of the system. To improve the model efficiency, we revise the travel time distribution based on the feature of normal distribution. The research employs a newly developed filtering technique, called unscented Kalman filter. The proposed model is evaluated with simulation experiments. Numerical analyses with respect to the sensitivity of the selection of initial parameters on the estimation results indicate that the proposed model is sufficiently reasonable and stable for real-world appli-cations. | LI JunWei LIN BoLiang SUN ZhiHui GENG XueFei | 2009 | Science China(Technological Sciences)2009，52，7： | 0 |
| 5 | Preliminary Study on Heavy Metal Pollution Status of Farmland Soil at Two Sides of Cheng-Guan Expressway显示文摘The heavy metal content of the farmland soil at two sides of Cheng-Guan Expressway is measured to make a preliminary evaluation on its heavy metal pollution status.After digestion and volume fixation of the soil samples collected,measure the Cu,Zn,Cd,Pb and Cr content with atomic absorption spectrophotometry and evaluate the measured data according to Level Two of National Soil Environmental Quality Standard to obtain the contamination status.Cu,Zn and Cd content of the farmland soil for sections of Cheng-Guan Expressway goes beyond Level Two of National Soil Environmental Quality Standard,while the Pb and Cr content meets Level Two of National Soil Environmental Quality Standard.Pb and Cr content of the farmland soil at two sides of Cheng-Guan Expressway is in safe state,while the Cu,Zn and Cd content is in a mild contamination state.Cu,Zn and Cd are the main pollution elements. | Dongli DUAN Shuangyan WANG Zumin ZHANG Zhouping YANG Hua ZHEN | 2013 | Asian Agricultural Research2013，5，8： | 0 |
| 6 | 四川雅泸高速公路人文景观构建分析——兼谈公路人文景观塑造手法(英文)显示文摘The concept of cultural landscapes was introduced,and it was proposed that the construction of highway cultural landscapes should follow the principles of 'protection first,secure,integrated,suitable for actual conditions,economic,natural and ecological'.In this study,relevant theories were taken to analyze the design of cultural landscapes along the Ya'an-Luguhu Expressway in Sichuan Province.Natural conditions,profound cultures and historical resources in the study area were analyzed,and the construction of its cultural landscapes was further discussed from the perspectives of properly dividing landscape spaces,determining the orientation of cultural landscapes,refining regional cultures,choosing carriers of cultural landscapes,improving cultural value of important landscape nodes by using artistic settings,applying more local materials and so on.So that helpful references could be provided for the landscape design of other expressways,and the integration of cultural landscapes and highway landscape system could be realized. | 蔡军 文华相 芶学强 | 2011 | Journal of Landscape Research2011，3，2： | 0 |
| 7 | Express way and Urban Road Interchange Design Strategy显示文摘Highway is an important kind of infrastructure which the transportation sector depends on.The rationality of the interchange design between urban roads and expressways is related to the relieving of urban traffic pressure.Based on the status quo of interchange design between urban roads and expressways,this paper discusses the types and applications of interchange design,hoping to provide reference for the design and construction of highway projects and ensure the rationality of interchange design. | Jinxi Ding | 2021 | Journal of Architectural Research and Development2021，5，3： | 0 |
| 8 | Ecological Design of Expressway Based on the Perspective of Landscape Ecology显示文摘The construction and operation of expressways will also bring a series of environmental and ecological problems,such as land use conflicts,ecological damage,environmental pollution,etc.In order to solve such problems,it is necessary to strengthen the application of landscape ecology.From the perspective of landscape ecology,this paper first introduces the impact of expressways on the ecological environment,and then analyzes the principles of expressway ecological landscape design.Landscaping,ecological environment,customer satisfaction,and other aspects have all performed well,with an optimization rate of over 90%.Future expressway design can strengthen the application of landscape ecology. | Tengfei Gong | 2023 | Journal of Architectural Research and Development2023，7，4： | 0 |
| 9 | Design Strategies of Expressway Routes and Interchanges显示文摘Road traffic conditions can have an important impact on the economic development of various regions.Under the background of rapid social and economic development,more and more expressway construction projects are initiated in various regions,including both new expressways and expansion of old expressways,and interchange design plays an important role.Scientific and reasonable interchange design can not only realize energy saving and low carbon footprint,but also be people-oriented and promote regional economic development.Therefore,this paper mainly analyzes the highway route and its interchange design strategy for reference. | Xiaomin Wu | 2023 | Journal of World Architecture2023，7，3： | 0 |
| 10 | Countermeasures for the Maintenance Management of Expressway Bridges and Tunnels显示文摘In order to improve the maintenance of expressway bridges and tunnels as well as to maximize the utilization rate of expressway bridges and tunnels,this paper studies the countermeasures for the maintenance management of expressway bridges and tunnels.Through theoretical analysis,this paper expounds the problems existing in the maintenance management of expressway bridges and tunnels as well as proposes corresponding solutions to these problems.By implementing the countermeasures for the maintenance management of expressway bridges and tunnels,it is possible improve the maintenance effect of expressway bridges and tunnels as well as ensure the smooth and safe operation of expressway bridges and tunnels. | Yuan Yin | 2022 | Journal of World Architecture2022，6，3： | 0 |
| 11 | Heavy metals in road-deposited sediment and runoff in urban and intercity expressways显示文摘Road-deposited sediments(RDS)accumulated on road surfaces are an important environmental medium that often provides transport for heavy metals.In order to understand the characteristics of heavy metals in RDS,we investigated the size distribution and heavy metal(i.e.Cd,Cr,Cu,Ni,Pb and Zn)concentrations in RDS and road runoff in typical expressways of suburban and rural area in China.The results demonstrated that RDS particles from all impervious expressway surfaces were predominantly coarse particles(>250μm,58.4%±3.8%)and the RDS on all expressways contained more heavy metals than background soils.Furthermore,the concentrations of Cd,Cr,Cu,Ni,Pb and Zn increased with traffic volume,suggesting that these heavy metals are mainly derived from traffic activities.Moreover,it is found that although heavy metals were concentrated in fine grain fractions,the total loading is highest for the coarsest particles due to their large mass percentage.Additionally,it reveals that the heavy metal concentrations in road runoff of suburban expressway are higher than that in urban expressway.Our findings enhance the understanding of expressway pollution,and imply that for controlling runoff pollution from RDS,transportation agencies should be concerned with both fine and coarse particles and take cleaning methods into account. | Shuohan Gao Xinjun Wang Hua Li Yaping Kong Jiding Chen Zheng Chen | 2022 | Transportation Safety and Environment2022，4，1： | 0 |
| 12 | Gaze Behavior and Landscape Experience Characteristics of Expressway Drivers显示文摘Landscape is the visual impression formed in the mind of the aesthetic subject from what he sees at a certain viewpoint.A good viewpoint field is a place without visual barrier in the visual direction.Under the premise of analyzing aesthetic basis of expressway,starting from behavioral basis of dynamic vision,visual behavior characteristics of drivers at high speed are studied.On this basis,landscape experience tempo and rhythm determined by gaze locus under different linear characteristics are explored,and the impact of spatial alignment on gaze behavior and landscape experience is further analyzed. | ZHU Xiaogang FANG Ying CHENG Xi | 2021 | Journal of Landscape Research2021，13，5： | 0 |
| 13 | The Joint Control of Variable Speed and On-Ramp Metering for Urban Expressway显示文摘The traffic performance of urban expressway is subject to non-recurring and recurring events, which may cause heavy congestion and vehicles long queuing on ramps. The low performance may bring more traffic delay to the whole network of urban road. This paper presents a new method, the joint control of variable speed control and on-ramp metering, which attempts to improve the level of traffic operations on urban expressway. By analyzing traffic flow on urban expressway, an optimum control strategy of variable speed and on-ramp metering is established in the paper. | Ma, J. Liu, X. Rong, J. Li, Z. | 2001 | Journal of Systems Engineering and Electronics2001，12，3： | 0 |
| 14 | Design Strategy of Municipal Reconstruction of Expressway in Mountainous Area显示文摘The construction of a mountain expressway is critical to the development of the mountain economy and the creation of mountain areas.However,since the service life of many mountain expressways continues to increase,municipal transformation design is required to improve the smoothness of the expressway,make efficient use of space,and reduce resource waste.The author investigates the current challenges in the construction of a mountainous expressway and proposes an effective method for municipal reconstruction design of a mountainous expressway,in the hopes of assisting in the optimization and development of the mountainous expressway. | Shang Ye | 2021 | Journal of Architectural Research and Development2021，5，6： | 0 |
| 15 | Analysis of Highway Subgrade Slope Protection and Support Technologies显示文摘As an important transportation hub in China,the traffic volume and driving speed are important aspects of expressways.Therefore,the protection requirements for roadbed side slopes are higher,and it is necessary to resist rainwater erosion and other damages by protecting the side slopes.Therefore,it is necessary to adopt effective technical means of subgrade protection and support.This paper mainly summarizes the characteristics of highway subgrade slope protection construction and slope protection and support technologies. | Zhipan Yang Haonan Ding Shuai Li | 2023 | Journal of World Architecture2023，7，4： | 0 |
| 16 | Analysis of Bridge Inspection Technology for Highway Reconstruction and Expansion显示文摘This article focuses on bridge testing technologies in highway construction and expansion projects.It provides an overview of the inspection process for bridges in highway reconstruction and expansion projects,the main inspections,and strategies for improving the quality of inspections.Relevant units should conduct bridge inspections using appearance inspections,special inspections,and bearing capacity assessments in highway reconstruction and expansion projects.To effectively improve testing quality,relevant units should also focus on establishing and improving testing standards,strengthening material testing,and improving the overall quality of the testing personnel.This research aims to enhance the quality of highway reconstruction and expansion projects by supporting the sensible application of bridge inspection technology. | Xu Meng Bo Liu Ji Li Zhi Tu | 2024 | Journal of World Architecture2024，8，1： | 0 |
| 17 | Analysis and Research on Interchange and Expansion options of Expressway显示文摘China's road network consists of numerous older expressways experiencing high traffic volumes and severe congestion,necessitating urgent reconstruction and expansion efforts.This study discusses the reconstruction and expansion project of the Yinkun Expressway's Chongqing High-tech Zone to Rongchang District section,with a detailed exploration of the entire design process.Through a comprehensive analysis,the strengths and weaknesses of different plans are examined,so as to determine the optimal plan.The design chosen saves costs while effectively addressing traffic demands.Additionally,the study summarizes the valuable design insights gained from this interchange transformation,aiming to provide valuable reference for similar interchange projects in the future. | Yaoping Luo | 2023 | Journal of World Architecture2023，7，4： | 0 |
| 18 | Review and perspective of expressway tunnels in Taiwan, China显示文摘Since the construction of the first expressway in the 1970s, the total length of expressways in Taiwan has increased to over 1 000 km, of which 40 km are aligned with tunnels. These twin-tube tunnels, which have two or three lanes in each tube, are characterized by large cross-sections. Due to the complicated topography and heterogeneous geological conditions of Taiwan, tunnel construction has encountered many difficulties. Thus, many advanced excavation methods were developed during tunnel construction. To satisfy the concurrent requirements of safety, economy and efficiency, new construction methods and techniques should be developed or introduced. Moreover, environmental protection and ecological conservation must be paid increasing attention to the goal of substantial development. | Shenchung Lee Darjen Tseng | 2011 | Journal of Rock Mechanics and Geotechnical Engineering2011，3，S1： | 0 |
| 19 | Design of Special-shaped Interchange between Expressway and Urban Road in Mountainous Cities显示文摘Driven by the rapid economic development,the development of transportation in China has begun to move towards mountainous areas.The climate environment,topography and landform of mountainous cities are different from those of plain areas.In mountainous cities,the area of opposite interchanges between expressways and urban roads is generally large,which has a certain contradiction with the topographic conditions of mountainous cities.Therefore,it is necessary to reasonably design the opposite interchanges between expressways and urban roads in mountainous cities.The author explores and analyzes the factors restricting the special-shaped interchange between expressway and urban road in mountainous cities and the main fbnns of special-shaped interchange,and puts forward a reasonable design scheme,hoping to make a smooth development of the special-shaped interchange in mountainous cities. | Shang Ye | 2021 | Journal of World Architecture2021，5，5： | 0 |
| 20 | Economic Benefits of Land Use in Hefei-Nanjing Expressway Service Stations显示文摘Economic benefits of land use in Feidong,Wenji,Dashu and Wuzhuang service stations at Hefei-Nanjing Expressway were analyzed from total output value of unit land and the tertiary industry added value of unit land.Results indicate that economic benefits of land use in Hefei-Nanjing Expressway service stations are lower than average economic benefits of urban land use in Anhui Province.Through analyzing existing problems in land use and operation and management of service stations,it came up with recommendations for increasing economic benefits of land use in Hefei-Nanjing Expressway service stations. | Zhongwei TANG Zhongxiang YU | 2014 | Asian Agricultural Research2014，6，4： | 0 |
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