Advanced Engineering Forum Vol. 5

Abstract: Starting from the definition of slow traffic system, taking Harbin for example, and by analyzing the characteristics and trip features of slow traffic system in cold region, the paper proposes that the central area should increase the pedestrian streets and underground warm gallery in cold city to improve walking environment in winter. At the same time, the paper puts forward that road cross- section planning and design should emphasis focus on the safety of non-motorized mode, and proposes specific measures, such as setting limited time of non-motorized vehicle lanes, slow integration design of non-motor vehicle lanes and sidewalk.

Abstract: Traffic accidents caused by drivers’ fatigue carry less than one percent of the whole accidents in HLJ Province during the years 2006 to 2008. However, more than forty percent of such accidents accompanied fatalities. Drivers’ fatigue is usually hard to be identified and there are no valid measures that could make real-time detection for it. Accordingly, variables such as drivers’ characteristics, time of accident and whether using seat belt are considered to have close association with the injury severity in fatigue-related traffic accidents. This research focuses on analyzing injury severities of traffic accidents caused by drivers’ fatigue, utilizing stepwise logistic regression method. Potential risk factors such as human, environment, road, and so on, were examined. Driving year, road pavement type, road grade and alignment, terrain, time and type of the accident, streetlight condition, vehicle type, speed limit, the number of vehicles involved, and whether using seat belt are significant factors impacting the injury severity. Identifying the high risk factors influencing the injury severity of fatigue-related accidents helps prevent the occurrence of drivers’ fatigue and improve road safety conditions.

Abstract: This paper reviews theory of allocating and scheduling resources at airport passenger terminals, from three aspects, that are method of integrating airport operational data, method of predicting passenger flow at airport terminals and optimization method of allocating and scheduling resources at airport terminals. Directions and challenges of future research are identified.

Abstract: As the major distributing center and intermediate transit point, the scale of transfer station in urban rail transit system directly affects the operational efficiency and overall cost of the entire system. So, accurately controlling the scale of transfer station becomes one of the most important aspects in improving service level and reducing the overall project cost. On the basis of summarizing the method on determining the scale of transfer station both home and abroad, the paper describes the role of the various facilities in rail transfer station, and illustrates the problems of our rail transfer station. Following the above discussion and investigation, the sizes of typical transfer station facilities are discussed and improved (e.g. vertical elevator). Taking the Longjiang Street station example, the proposed methods and models are verified and the analysis result shows that this transfer station should be cross platform interchange mode.

Abstract: The pavement distress has considerable influence with drivers. Considering the fact that the forms of asphalt pavement potholes, subsidence and cement pavement potholes (collectively defined as pavement pothole-subsidence) are similar and they can influence traffic flow significantly, we put forward to use indexes such as Tangential Diameter Length, Normal Diameter Length, Depth, Lateral distance, etc to describe the characteristics of pothole-subsidence. According to different wheel paths & speed, driving modes was classified into several types, influences of various pothole-subsidence on driving mode and speed was analyzed.

Abstract: This paper proposes an equilibrium model of urban taxi services on network to present the impact of the integrated service modes and the influence of the elastic customer demand distribution on taxi network equilibrium. Based on the cruising service mode, the model can describe how occupied taxis and vacant taxis cruise on network to provide services and search for customers by considering both the expected time cost and ride revenue and the elastic distribution characteristic of customer demand. At the same time, the dispatch service equilibrium problem by researching trip mode choice behavior is also considered. The model can then establish the relationship between customer waiting time and taxi search/waiting time by introducing a taxi-customer meeting function. And moreover, in supply-demand equilibrium, a number of performance measures of the taxis market can be obtained, such as the number of cruising taxis, the number of dispatch taxis and the average customer waiting time.

Abstract: To design vehicle auxiliary equipment, it need master the characteristic of eye. The paper adopted iView X HED as equipment to get the characteristic of eye during traffic operation, results could be treat as experiment research. The paper collected the data of eye, and adopted location, during, blink time, blink frequency, transient of eye focus as parameters to study the characteristic of eye, and given a measurable value to them. It was a foundation to further research of driver’s characteristic. The result shown that: the location mainly in ahead, the average value of time and blink was 0.3098s and 0.231s. Frequency of blink was respond to traffic condition, the mainly direction of transient was left and right.

Abstract: Integrated transfer hub is the important transportation infrastructure and a passenger distributing center place. While our country integrated transfer hub exist some problems as attaching importance on line construction while despising hub layout. The spatial layout and facility layout is reasonable and imperfect, making low transfer efficiency, traffic bottlenecks, waste of resources. Therefore layout optimization of integrated transfer hub is a problem to solve. Combine with features and running state of transit hub in our country, passenger transport demand is forecasted and the combination forecasting model is constructed based on quadratic. In layout optimization of integrated transfer hub, the optimization method of facility layout is also put forward, building a model with minimum cost as the objective, layout of hub is effectively optimized. While proposing the optimization method, system evaluation is proposed aiming at the method, and three respects including internal benefits, social benefit and environmental benefit are used to evaluate the optimized system.

Abstract: With urbanization process acceleration in China, traffic travel among cities becomes increasing, and traffic mode split is the key link of traffic passenger flow forecast among cities. In this paper, the concept of high-density town cluster was proposed to analyze the characteristics of development, population composition, and traffic facilities among high-density town cluster. Based on applicability analysis of aggregate model and disaggregate model, survey content of revealed preference (RP) and stared preference (SP), and traffic mode hierarchical division according to average speed, then NL disaggregate model among high-density town cluster was constructed. NL model which was parameter calibrated and validated with DongGuan citizen travel investigation data in 2009 was used to analyze the trend of traffic mode split. The result shows that high-density town cluster, such as DongGuan, are establishing a three-dimensional travel mode set, including high-speed rail, intercity rail, suburban rail, urban rail transit, intercity express bus, car, taxi, and common public transport. With the network of multi-mode rail transit further improving, ratio on choosing the traffic mode of multi-mode rail transit, such as high-speed rail, intercity rail, suburban rail, urban rail transit, increases dramatically.

Abstract: Many studies focused on the development of crash analysis approaches have resulted in aggregate practices and experiences to quantify the safety effects of human, geometric, traffic and environmental factors on the expected number of deaths, injuries, and/or property damage crashes at specific locations. Traffic crashes on roads are a major cause of road crashes in the metropolitan area of Xi’an. In an attempt to identify causes and consequences, reported traffic crashes for six years in Xi’an were analyzed using a sample of 2038 reports. The main types of information from such reports were extracted, coded, and statistically analyzed. Important results were obtained from frequency analyses as well as multiple contributory factors related to traffic crashes, including crash severity, time and location of occurrence, geometry of the road, AADT and v/c. This paper presents the results of such analyses and provides some recommendations to improve traffic safety and further studies to analyze potential crash locations.