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2020 IEEE 5th International Conference on Intelligent Transportation Engineering (ICITE)最新文献

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Multi Decoupling Point Optimization Model and Its Application in Ecotype Supply Chain - Platform A Case Study 多解耦点优化模型及其在生态型供应链平台中的应用——以供应链平台为例
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231519
Jin Zhang, Hongming Zhang, Xinyi Chang
Aiming at the problems of the integration of ecotype supply chain platform, such as the uneven ability of suppliers, and the increasingly diversified market demand makes the platform cost difficult to reduce, etc., by positioning customer order decoupling point (CODP), considering the characteristics of ecotype supply chain with multiple orders, logistics services and manufacturing and production, a double objective and multiple decoupling point is constructed, which aims at the lowest total cost and the highest customer value positioning model, balancing cost and personalized demand, providing better customized rate decision-making scheme, and using the data provided by platform A, improving genetic algorithm, to verify the model solution. The customization rate and order quantity of platform operators under the decision-making of customer value preference and cost preference are solved. It is proved that the multi decoupling point positioning model can provide decision-making scheme for platform operators with different preferences, reduce the cost of ecological supply chain and improve customer satisfaction.
针对生态型供应链平台集成中存在的供应商能力参差不齐、市场需求日益多样化导致平台成本难以降低等问题,通过定位客户订单解耦点(CODP),考虑生态型供应链多订单、物流服务和制造生产的特点,构建了双目标、多解耦点;以总成本最低、客户价值最高为目标的定位模型,平衡成本与个性化需求,提供更好的定制费率决策方案,并利用A平台提供的数据,改进遗传算法,对模型解进行验证。求解了客户价值偏好和成本偏好决策下平台运营商的定制率和订货量问题。结果表明,多解耦点定位模型可以为不同偏好的平台运营商提供决策方案,降低生态供应链成本,提高客户满意度。
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引用次数: 1
Application of Random-parameter Negative Binomial Model to Examine the Relationship between the Severity of Traffic Accident 随机参数负二项模型在交通事故严重程度关系检验中的应用
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231383
Fangyuan Li, Kun Jiang
Traffic accident injury is the eighth leading cause of death in the world, which seriously affects economic development and life stability. In order to explore the influencing factors of the severity of major road traffic accidents in China, potential influencing factors were selected from the statistical data of 366 major accidents. Fixed-parameter and random-parameter negative binomial model were respectively used to build models for accidents data. The results show that geographical zone, time and date of accident, road administrative grade, season, accident type, road alignment and number of traffic violation behavior are significantly related to the accident severity. Strict management of drivers is an effective way to improve the degree of accident injury.
交通事故伤害是世界第八大死亡原因,严重影响经济发展和生活稳定。为了探讨中国重大道路交通事故严重程度的影响因素,从366起重大事故的统计数据中选取潜在影响因素。分别采用固定参数和随机参数负二项模型对事故数据建立模型。结果表明,地理区域、事故发生时间和日期、道路行政等级、季节、事故类型、道路线形和交通违法行为数量与事故严重程度显著相关。严格对驾驶员的管理是提高事故伤害程度的有效途径。
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引用次数: 0
Application and Evaluation of NovaSurfacing Technology 新表面处理技术的应用与评价
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231345
Xiaojun Zhang, Dongna Li, Xingjun Zhang, W. Hong, Luchun Yan, Shanglin Song
In order to solve the problems of poor adhesion and durability at conventional micro surfaces, The process of spraying modified emulsified asphalt, paving and mixing super-abrasive layer containing glass fiber, novasurfacing are used. The SCB semi-circular bending test compares the performance comparison between the novasurfacing and the conventional micro-surfacing. The coefficients of friction, flatness, and PCI are used to compare the performance changes before and after the repair of the road section. Use the net annual value method to evaluate its economic benefits. The results show that the supervised abrasion layer has advantages in both performance and economic benefits.
为了解决常规微表面附着力差、耐久性差的问题,采用了喷涂改性乳化沥青、铺装和混合含玻璃纤维的超磨料层、新表面处理的工艺。SCB半圆弯曲试验比较了新表面堆焊与常规微表面堆焊的性能对比。采用摩擦系数、平整度系数和PCI系数来比较路段修复前后的性能变化。采用净年值法评价其经济效益。结果表明,监督磨损层具有良好的性能和经济效益。
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引用次数: 0
Optimize Train Operation Plan of Urban Rail Transit Including Temporal Variation of Passenger Ridership During the Day 考虑白天客流量变化的城市轨道交通列车运行方案优化
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231504
Yang Cai, Q. Luo, Wei Li, Lei Gong
Train operation plan is one of important components of the daily operation organization of the urban rail transit system. Dynamic train operation plans during different time periods to meet the needs of passenger travel can reduce train operation costs and improve economic benefits. Defining the total cost as a combination of the cost of passenger time value and the cost of train operation, this paper sets the minimum value of the total operating cost as the goal and establishes an optimization model for evaluating and choosing train operation plans. This optimization model is validated by an example of Shenzhen Metro Line 1 whose weekday peak train operation plan is investigated. Train operation alternative plans, i.e. small marshalling of trains, a combination of long-and-short routing, and connected routing, are evaluated with the optimization model. Lingo software is used to solve the mathematical problem to obtain the optimized the train operation plan, and making decisions based on the results provide a suitable driving organization. Meanwhile, sensitivity analysis is also implemented to check the influence of different values of parameters utilized in the calculation. The example shows that the small marshalling of trains alternative has a significant optimization benefit in the context of the Shenzhen Metro Line 1 whose working day evening peak train operation scheme is investigated.
列车运营计划是城市轨道交通系统日常运营组织的重要组成部分之一。为满足旅客出行需求,制定不同时间段的列车动态运行计划,可以降低列车运行成本,提高经济效益。本文将总成本定义为旅客时间价值成本与列车运营成本的组合,以总运营成本的最小值为目标,建立了列车运营方案评价与选择的优化模型。以深圳地铁1号线为例,对该优化模型进行了验证。利用优化模型对列车小编组方案、长短线组合方案和衔接方案进行了评价。利用Lingo软件求解数学问题,得到优化的列车运行方案,并根据结果进行决策,提供合适的驱动机构。同时,还进行了灵敏度分析,检查了计算中使用的参数不同值对计算结果的影响。算例表明,以深圳地铁1号线工作日晚高峰列车运行方案为例,列车小编组方案具有显著的优化效益。
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引用次数: 0
Real-time Group Route Diversion Control Considering Dynamic Response Behavior 考虑动态响应行为的实时群路导流控制
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231327
Tiandong Xu, Yuan Hao, Yao Yu, Huibing Li, Xinshuo Xu
This paper proposes a real-time group route diversion control (GRDC) methodology to determine route diversion strategies based on the controller's objectives and drivers' dynamic response behavior. The GRDC optimization procedure is to update the GRDC strategies to minimize the difference between the desired diversion rates and the diversion rates obtained from the drivers' route diversion behavior (DRDB) model, which comprises a GRDC model that determines the desired diversion rates to satisfy some system objectives of the GRDC controller, and a controller-estimated drivers' route diversion behavior (DRDB) model that predicts the likely driver route choice decisions in light of the updated GRDC strategies. The experimental results show that the group route diversion control considering dynamic response behavior can effectively provide guidance for drivers, improve the accuracy of traffic state prediction, and obtain better system performance over the same period of operations.
提出了一种基于控制器目标和驾驶员动态响应行为的实时群体改道控制方法(GRDC)。GRDC优化过程是更新GRDC策略,使期望导流率与驾驶员路线导流行为(DRDB)模型得出的导流率之间的差值最小。DRDB模型包括一个GRDC模型,该模型确定了满足GRDC控制器某些系统目标的期望导流率;控制器估计的驾驶员改道行为(DRDB)模型,该模型根据更新的GRDC策略预测驾驶员可能的路线选择决策。实验结果表明,考虑动态响应行为的群体改道控制可以有效地为驾驶员提供指导,提高交通状态预测的准确性,并在同一运行周期内获得更好的系统性能。
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引用次数: 0
Investigating Influence Factors on Injury Severity of Electric and Non-electric Bicycle Crashes in Beijing 北京地区电动与非电动自行车碰撞伤害严重程度影响因素调查
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231401
Yuxuan Xing, Zhiyuan Sun, Duo Wang
The objective of this study was to identify influence factors on injury severity of electric and non-electric bicycle crashes and discuss the differences between them in Beijing, China. Generalized linear model (GLM) and classification and regression tree (CART) were proposed to investigate significant influence factors and the importance order of influence factors, respectively. Based on GLM, seven factors were significant in electric bicycle crashes whereas five factors were significant in non-electric bicycle crashes. CART implied the most important factors was type of motor vehicle both in electric and non-electric bicycle crashes. However, other important factors showed different characteristic in the two type of crashes. This paper gives detailed information for electric and non-electric bicycle crashes, which provides reference for government to implement measures precisely.
本研究的目的是找出影响北京地区电动自行车和非电动自行车碰撞伤害严重程度的因素,并讨论它们之间的差异。采用广义线性模型(GLM)和分类回归树(CART)分别考察影响因素的显著性和影响因素的重要顺序。基于GLM,有7个因素在电动自行车事故中显著,5个因素在非电动自行车事故中显著。CART表明,在电动和非电动自行车事故中,最重要的因素是机动车辆的类型。然而,其他重要因素在两种类型的碰撞中表现出不同的特征。本文给出了电动自行车和非电动自行车碰撞事故的详细信息,为政府准确实施措施提供参考。
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引用次数: 4
Car-to-Car Communication Using ITS-G5 & 5G 使用ITS-G5和5G的车对车通信
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231349
Muhammad Naeem Tahir, Sahar Fatima, Nouman Bashir
Successful growth for an enduring system and service framework requires an ecofriendly permanent infrastructure. The key goal of this article is to develop ITS-G5 and 5G test network services related to road weather and pilot use-cases for the special requirements of multi-authority, intelligent traffic, and vehicle winter testing. We have conducted a set of pilot use-cases by considering 5G test network and ITS-G5 networking and performed analysis between them. These pilot measurements, made it possible for Finnish Meteorological Institute (FMI) to present the pilot road weather services and test experiences and services established in numerous research projects of FMI. The followed research strategy has been practical from innovation, to testing and to appraisal. Main portion of these pilot use-cases have involved a large scale field measurements, system testing and road weather information. As a result, this pilot set-up would be able to provide precise road weather alerts with accurate location and services like forecasting into the road infrastructure. These pilot measurements distributed the real-time road weather data and services through advanced 5G test network or ITS-G5 communication to the vehicles and traffic actors.
持久的系统和服务框架的成功增长需要生态友好的永久基础设施。本文的主要目标是开发与道路天气和试点用例相关的ITS-G5和5G测试网络服务,以满足多权威、智能交通和车辆冬季测试的特殊需求。我们考虑了5G测试网络和ITS-G5组网,进行了一组试点用例,并对两者进行了分析。这些试点测量,使芬兰气象研究所(FMI)有可能提供试点道路气象服务和测试经验,并在FMI的许多研究项目中建立了服务。本文提出的研究策略从创新到检验再到评价具有一定的实用性。这些试点用例的主要部分涉及大规模的现场测量、系统测试和道路天气信息。因此,这个试点装置将能够提供精确的道路天气警报,并提供准确的位置和服务,如预测道路基础设施。这些试点测量通过先进的5G测试网络或ITS-G5通信向车辆和交通参与者分发实时道路天气数据和服务。
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引用次数: 7
Will Autonomous Vehicles Improve Traffic Efficiency and Safety in Urban Road Bottlenecks? The Penetration Rate Matters 自动驾驶汽车会提高城市道路瓶颈的交通效率和安全性吗?普及率很重要
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231360
Tianshu Zhang, Kun Gao
The emerging autonomous vehicles (AVs) are expected to bring pronounced evolutions in transport systems. This study explores the characteristics of mixed traffic flow with both AVs and human drivers in urban bottlenecks. We investigate the influences of penetration rate (PR) of AVs on the performances concerning traffic efficiency and safety in urban bottlenecks with road width reduction. We developed a cellular automata model (CAM) to realize the microscope simulation of the mixed traffic flow with both AVs and traditional vehicles manipulated by human drivers. The divergences in driving behavior of human drivers and AVs in terms of car-following, lane-change and free-driving are fully delineated and integrated in the simulation. The results demonstrate that the traffic flow stability firstly decreases and then increases with the PRs of AVs and in mixed traffic flow. When PR of AVs reaches 100%, the traffic flow is stabilized and shows high travel speed, indicating higher traffic efficiency. The lane-changing frequency increases when PR of AVs increases, reaching the maximum value at the PRs of 15%-25%, and then gradually drops. The lane-changing frequencies under the scenarios of all AVs are found to be smaller than the scenarios of all human drivers. The actual road capacity is reduced when PR of AVs increases at first, reaches lowest at the PR of 15%-25%, and then gradually rebounds. The risk of collision gradually increases with PRs of AVs, and then reaches the maximum value at the PR of 25%-30%. As PR of AVs continues to increase, the risk will keep decreasing to 0. The findings provide a comprehensive investigation of how the AVs will influence traffic efficiency and safety from different aspects, which are basic for the development and planning of AVs in the future.
新兴的自动驾驶汽车(AVs)有望给交通系统带来显著的变革。本研究探讨了城市交通瓶颈中自动驾驶汽车和人类驾驶员混合交通流的特征。研究了在道路宽度减小的城市瓶颈路段,自动驾驶汽车渗透率对交通效率和安全性能的影响。建立了元胞自动机模型(CAM),实现了人工驾驶下自动驾驶汽车与传统车辆混合交通流的微观模拟。仿真充分刻画了人类驾驶员和自动驾驶汽车在跟车、变道、自由驾驶等方面的驾驶行为差异。结果表明:在混合交通流中,随着自动驾驶汽车的行驶速度增加,交通流稳定性先减小后增大;当自动驾驶汽车的PR达到100%时,交通流量较为稳定,行驶速度较高,表明交通效率较高。自动驾驶汽车变道频率随PR的增加而增加,在PR为15% ~ 25%时达到最大值,之后逐渐下降。所有自动驾驶情景下的变道频率都小于所有人类驾驶员的变道频率。实际道路通行能力在自动驾驶汽车的PR先增大后减小,在PR为15% ~ 25%时达到最低,之后逐渐回升。碰撞风险随着自动驾驶汽车的PR值逐渐增大,在PR值为25% ~ 30%时达到最大值。随着av的PR不断增加,风险将不断降低至0。研究结果从不同方面全面探讨了自动驾驶汽车对交通效率和安全的影响,为未来自动驾驶汽车的发展和规划奠定了基础。
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引用次数: 5
ZC Application Software Development Method Based on Boolean Logic 基于布尔逻辑的ZC应用软件开发方法
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231513
Jinlei Wang
This paper introduces a development mode of zone controller (ZC) application software based on Boolean Logic so as to reduce the risk and difficulty caused by using advanced language (C, C++) to develop application software. It provides a new idea for the development of ZC application software for rail transit signal engineers.
本文介绍了一种基于布尔逻辑的区域控制器(ZC)应用软件的开发模式,以降低使用高级语言(C、c++)开发应用软件所带来的风险和难度。为轨道交通信号工程师开发ZC应用软件提供了新的思路。
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引用次数: 0
An Optimization Approach to the Low-Frequency Entire Train Formation with Price Discount 考虑价格折扣的低频整列列车编组优化方法
Pub Date : 2020-09-01 DOI: 10.1109/ICITE50838.2020.9231410
Shuting Zuo
Historically, railroads and shippers have reached a consensus that the introduction of entire train service for bulk commodities can significantly save the costs of operating railcars and improve operating efficiency. This article provides a new idea for flexible pricing and increasing the proportion of entire trains while improving the long-standing problem of insufficient consideration of customer satisfaction for Chinese railway freight transportation, which may contribute to the increase in railway freight market share. In this paper, we suggest a way of providing lower prices (compared to single cars) for entire trains to induce customers to choose the entire train service to improve rail operating efficiency and save cost, which is not been implemented in China. In this case, the cost structure in the rail freight transportation process and the inventory cost of shippers are analyzed. Then, a mixed-integer programming model that maximize the profit of the logistic system composed of the railway company, the suppliers and the customers is developed to find out the optimal discount and entire train operating scheme. Finally, a small computational experiment is used to test the model. The results show that the application of entire train discounts and reasonable arrangements for entire train operation schemes can effectively improve the entire train proportion and system profit.
从历史上看,铁路公司和托运人已经达成共识,即引入散装商品全程列车服务可以大大节省铁路车辆的运营成本,提高运营效率。本文在改善我国铁路货运长期存在的顾客满意度考虑不足的问题的同时,为灵活定价和提高整列比例提供了新的思路,有助于提高铁路货运市场份额。在本文中,我们提出了一种提供整列列车更低的价格(相对于单节车厢)的方式,以诱导客户选择整列列车服务,从而提高铁路运营效率,节约成本,这在中国并没有实施。在这种情况下,分析了铁路货物运输过程中的成本结构和托运人的库存成本。然后,建立铁路公司、供应商和客户组成的物流系统利润最大化的混合整数规划模型,找出最优折扣和整个列车运营方案。最后,通过小型计算实验对模型进行了验证。结果表明,采用整列折扣,合理安排整列运营方案,可以有效提高整列比例和系统利润。
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引用次数: 0
期刊
2020 IEEE 5th International Conference on Intelligent Transportation Engineering (ICITE)
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