营松路互通立交与服务区合并设置设计

在吉林省营松高速公路项目中,燕平互通立交与靖宇服务区合并设置,设计中通过方案对比,选定了适合本项目特点的互通立交型式、服务区位置及结合方式,充分发挥互通立交的功能,提高服务区水平,达到合并后的和谐统一。     

城市互通立交的选型与设计

根据城市互通立交设置空间有限、功能要求高、选型及规模对城市交通影响重大的特点,着重对城市互通立交选型与设计的要点进行了探讨,并结合合肥市二环路—徽州大道枢纽立交论述了城市互通立交的选型与设计,可为国内其他类似五路交叉口改造为互通立交提供借鉴参考。     

高速公路服务设施建设规模研讨

主要探讨我省高速公路服务区、停车区的建设规模和征地标准,同时对服务设施的建设原则、选点条件、设置间隔、原则布局等也做了简要叙述.     

厌氧短程硝化污水处理技术研究

文章结合广西境内的高速公路服务区、停车区、收费站、管理所等服务设施污水处理现状,针对当前高速公路服务区、收费站、停车区所配套的A/O法污水处理工艺的缺陷,研发出一套适用于我国南方地区高速公路服务区、收费站等服务设施的小型污水处理技术“厌氧短程硝化污水处理技术”。     

高速公路立交和开放式单侧服务区合建方案研究

在高速公路服务区+旅游融合发展的背景下,文章提出立交、开放式单侧服务区合建的设计方案,分析了立交、服务区合建时的交通流特性,研究了对应的交通组织及诱导方案,并将提出的立交、开放式单侧服务区合建方案与传统的合建方案、独立设置方案进行对比,得出立交、开放式单侧服务区合建方案可节约用地规模和工程造价,且能更有效地与地方旅游融合发展,为打造服务区+旅游的建设方案提供了一种新的思路。     

五肢互通式立交改扩建工程施工组织方案优化探讨

国内采用五肢互通立交不多见,主要原因在于其占地较多,布局困难,结构设计复杂,分流控制难度大,行车指示复杂。文章以南宁外环高速公路安吉互通立交改扩建为背景工程,对五肢互通立交改扩建工程施工组织方案进行优化,合理设置临时改道进行交通分流,在维持原有高速公路交通安全、畅通的前提下,较好地解决了改扩建施工组织问题,为同类工程施工提供参考。     

广西南宁市竹溪立交总体设计思路

文章针对广西南宁市竹溪大道民族大道立交工程的特点,提出了总体设计思路。运用互通立交与周边建筑、环境关系的理论,分析了互通立交设计方案的优劣,并对城市互通立交设计方案与综合交通环境和人文景观环境的关系提出见解和意见。     

百罗高速公路人文景观整合设计

文章以广西百罗高速公路人文景观设计为例,阐述了百罗高速公路总体景点规划布局思路,并提出了以百色西互通立交主题浮雕、民魂璀璨耀八桂艺术彩绘、服务区主题雕塑为主的人文景观整合设计方案,为今后广西高速公路人文景观设计和建设提供借鉴.     

G0512线成乐高速绕城枢纽互通立交方案研究

G0512成都至乐山高速公路与成都绕城高速公路在武侯区交叉,需设置十字枢纽互通,并在绕城高速公路内侧设置主线收费站。该互通交叉节点绕城高速公路与成绵乐高铁平行,最近的节点距离填方坡脚仅5 m,互通匝道布设受铁路影响较大,交叉区域位于城市边缘,受控因素多,方案布设难度大。文章结合成都绕城高速公路、成绵乐高铁及周边控制点布局,介绍了G0512成都至乐山高速公路与成都绕城枢纽互通式立交设计方案的比选研究过程。     

单喇叭互通立交方案设计

单喇叭互通立交是我国应用范围最广泛的互通立交形式，具有其他互通立交无法比拟的诸多优点，而方案选择是决定互通使用功能和造价的关键，笔者结合多年工程实践经验，就单喇叭互通在象限、形式、交叉方式、喇叭头线形、设计速度等方面进行了分析，以达到在满足使用功能的前提下，尽可能增加行车安全、降低造价。     

Willingness to pay for improving service quality in a multimodal area

Travellers use the installations at multimodal areas to transfer from one mode of transport to another. In many cases these installations are called interchanges. This article characterises the users of transport interchanges to determine the fundamental attributes which they most value when they pass through the area. A Stated Choice survey is designed and administered and Mixed Logit models are estimated to calculate willingness to pay levels for three main attributes: transfer time, the quality of the available information and the services provided in the area. Travellers place most value on the quality of the information they receive and the available services rather than on transfer time, which contradicts the widely held opinion of experts in the field. This opens up new possibilities in the design of modern interchanges which should concentrate more on being welcoming areas with many information points rather than being based around minimising transfer times.     

The effects of on‐street parking on the service rate of nearby intersections

An on‐street parking maneuver can often start a temporary bottleneck, leading to additional delay endured by the following vehicles. If the maneuver occurs near a signalized intersection, the service rate of the intersection might be reduced. In this paper, a model is built to analyze the effects of parking maneuvers on the intersection service rate. Based on the hydrodynamic theory of traffic flow, the perturbation caused by the parking maneuver is analyzed. Using dimensional analysis, we illustrate the relation between the background conditions, the distance from the parking area to the intersection, and the intersection service rate. Based on this relation, one can compute the service rate reduction caused by existing on‐street parking areas. A minimum distance between the parking area and the intersection to avoid such reduction can be accordingly found. Numerical examples based on empirical data from the city of Zurich, Switzerland, are provided to illustrate the practical applications. Although the analysis is based on streets with a single lane per direction, the findings can provide some insights regarding different situations. We hope such findings can be used as a basis for developing on‐street parking design guidelines. Copyright © 2015 John Wiley & Sons, Ltd.     

Parking demand and responsiveness to supply,pricing and location in the Sydney central business district

This paper investigates the role of parking pricing and supply by time of day in whether to drive and park in the central business district (CBD). A stated preference survey of car drivers and public transport users was undertaken at a number of parking locations, public transit interchanges, and shopping centres in Sydney CBD during 1998. In the context of a current trip to the CBD, respondents were asked to consider six alternatives, including three parking locations in the CBD, park outside of the CBD with public transport connection to the CBD, switch to public transport, or forego that trip to the CBD. The three parking locations were defined by hours of operation, a tariff schedule, and access time to the final destination from the parking station. Data from the survey were then used to estimate a nested logit model of mode and parking choices, which was then used to simulate the impacts of supply pricing scenarios on CBD parking share. The change in CBD parking share attributable to supply by time of day is less than 3%, compared to 97% attributable to parking prices.     

Parking policies in large cities in Germany

This article deals with highly motorized large West German cities of about 200,000 inhabitants and more, which usually provide reasonable public transport systems. Illegal parking with shares of about 40 to 50% of the total parking is widespread in the parking problem areas of those cities, especially in the inner-city residential and mixed-use areas. Parking spaces are demanded by residents, employees, customers and visitors, and by delivery and service traffic. The different characteristics of parking demands by different user groups are discussed. The total parking supply consists of public and private spaces. The share of private spaces is about 40 to 50% of the total parking spaces in German cities. The amount of car traffic generated by a parking space depends on parking duration and parking turnover, as well as on search traffic. So the change of a space from long-duration use of an employee to short-duration of customers — as often discussed in parking concepts — generates at least five-fold car traffic. The measurements and effects of parking control of public spaces as well as the parking regulations in zoning ordinances, restrictions on the construction of new private parking spaces and park-and-ride are discussed. Finally, a parking concept methodology — using the example of Frankfurt am Main — is discussed.     

江苏省高速公路服务区绿色发展分析

结合江苏省独有的条件,文章分别从用地面积、建筑面积、绿化面积、停车位数量、用电、用水及其他节能辅助设施等方面入手,运用统计学、经济学和能源学等相关方法,对江苏省各地区服务区的资源利用现状进行了统计分析。并结合《江苏交通控股有限公司关于推进服务区高质量发展三年行动计划(2018-2020)》中关于服务区分类一览表的基础数据,分析服务区有何不足与缺陷,从问题出发提出相关措施,为以后服务区基础设施建设的研究奠定基础。     

Effect of parking information on travelers' knowledge and behavior

In many urban centers the demand for parking increases sharply before Christmas mainly due to shopping activity — causing parking congestion. One way to ameliorate such congestion is by disseminating parking information. Informed drivers may divert to relatively under-utilized parking facilities relieving the pressure on congested facilities. The City of Nottingham in England tested a real-time parking information system designed to alleviate congestion in the City Center parking facilities. Real-time information was disseminated through the radio, while historical information regarding parking locations was disseminated through newspaper advertisements and leaflets. The objective of this study is to assess impacts of the parking information system on travelers' knowledge and decisions.Survey research was used to understand traveler response. Respondents' levels of knowledge regarding car parks were analyzed by developing Poisson regression models. Drivers were more likely to have greater knowledge of city center car parks if they used several information sources (radio broadcasts, newspaper advertisements or leaflets and word-of-mouth), were active seekers of parking information, and searched for parking rather than going directly to a parking facility. In addition, the study of behavior showed that drivers were more inclined to use the relatively under-utilized Park-and-Ride facilities instead of the city center car parks if they received parking information from Newspaper advertisements/leaflets. Overall, the parking information service in Nottingham was effective; it seems reasonable to establish such information dissemination and monitoring systems at parking facilities in other urban areas. Furthermore, to support informed travel and activity participation decisions, parking information should be integrated with traffic and transit information.     

Decisions on truck parking place and time on expressways: an analysis using digital tachograph data

With the objective of deriving useful insights into measures against traffic congestion at service areas (SAs) and parking areas (PAs) on expressways and ensuring efficient use of SAs/PAs, this study investigated the decisions on where a truck is parked (i.e., choice of an SA or a PA), how long it is parked (i.e., parking time), and their influential factors. To this end, this study used the trajectory data of 1600 trucks recorded in 6-min intervals by in-vehicle digital tachographs on the Sanyo and Chugoku Expressways in Japan from October 2013 to March 2014. First, the aspect of repeated choice of each truck (i.e., habitual behavior) toward a specific SA/PA was clarified. Next, a multilevel discrete–continuous model (Type II Tobit model) was developed to reveal the factors affecting the above decisions. The modeling results confirmed the existence of habitual behavior and showed that trucks were more likely to be parked a longer time at an SA/PA when it is closer to the destination. It appears that truck drivers may adjust their time at the SA/PA close to the destination to comply with the arrival time, which is often predetermined by the owner of the transported goods. Furthermore, the availability of restaurants and shops, and the number of parking spaces available for trucks and trailers are important determinants of parking time, whereas the existence of a convenience store is important to the choice of the SA/PA. Parking experience has an extremely strong positive effect on the parking choice and use. Moreover, increasing the number of parking lots may induce its longer use.

     

Transportation serviceability analysis for metropolitan commuting corridors based on modal choice modeling

Major commuting corridors in metropolitan areas generally comprise multiple transportation modes for commuters, such as transit (subways or buses), private vehicles, or park-and-ride combinations. During the morning peak hour, the commuters would choose one of the available transportation modes to travel through the corridors from rural/suburban living areas to urban working areas. This paper introduces a concept of transportation serviceability to evaluate a transportation mode’s service status in a specific link, route, road, or network during a certain period. The serviceability can be measured by the possibility that travelers choose a specific type of transportation service at a certain travel cost. The commuters’ modal-choice possibilities are calculated using a stochastic equilibrium model based on general travel cost. The modeling results illustrate how transportation serviceability is influenced by background traffic flow in a corridor, value of comfort for railway mode, and parking fee distribution.     

喀斯特地貌地区高速公路建设安全管理研究

文章基于喀斯特地貌地区高速公路建设的特点,分析了喀斯特地貌高速公路建设过程中普遍存在的安全问题,提出加强喀斯特地貌地区高速公路建设安全管理工作的思路,并介绍了地处喀斯特地貌地区的广西河池至都安高速公路工程安全管理工作经验。