East Japan Railway Company(JR East)is aiming to“realize driverless train operation”as one of the key measures to respond to rapid changes in the business environment.Currently,Automatic Train Operation(ATO)equipment...East Japan Railway Company(JR East)is aiming to“realize driverless train operation”as one of the key measures to respond to rapid changes in the business environment.Currently,Automatic Train Operation(ATO)equipment is not installed on the Shinkansen,but there are plans to introduce ATO or driverless operation in the near future.From 2018-2021,the Ministry of Land,Infrastructure,Transport and Tourism(MLIT)held the“ATO Technology Study Group for Railways”in which the concept of technical requirements necessary for driverless operation was discussed.In 2021,JR East conducted the GOA4 demonstration test on the Joetsu Shinkansen.In this test,we were able to confirm the basic functions of Shinkansen vehicles such as automatic departure control,speed control,fixed position stop control,and remote stop control using ATO.We aim to realize unattended operation(GOA4)for deadhead trains between Niigata Station and the Niigata Shinkansen Rolling Stock Center by the end of the 2020 s,and driverless operation(GOA3)for passenger trains of the Joetsu Shinkansen by the mid-2030s and continue to develop the necessary technologies and build systems.展开更多
Driverless car,as a direction for future automobile development,greatly improves the efficiency and safety of the traffic system.It’s one of the most popular technical fields.In recent years,driverless car has develo...Driverless car,as a direction for future automobile development,greatly improves the efficiency and safety of the traffic system.It’s one of the most popular technical fields.In recent years,driverless car has developed rapidly.The related development is concerned by governments,businesses,consumers and stakeholders widely,and most of countries have been actively studying this technology.This paper first introduces the current development of driverless car at home and abroad.Besides,the basic technologies of driverless car are briefly analyzed.In addition,the author compares the American government’s attitudes with Chinese government’s attitudes towards driverless car.Specifically,the article makes an analysis of contents of literature and periodicals at home and abroad and policies and documents which have already been published.The analysis shows that there is no great difference between the attitudes of Chinese and American governments.Both of two governments actively support the development of driverless car.Finally,this paper expounds the development direction of the driverless car field in future by dividing into two categories through road conditions:automatic driving on expressways and automatic driving in cities.展开更多
To expedite the large-scale deployment of driverless taxis and advance the autonomous driving industry,research on the location of integrated parking and charging facilities for driverless taxis has emerged as a signi...To expedite the large-scale deployment of driverless taxis and advance the autonomous driving industry,research on the location of integrated parking and charging facilities for driverless taxis has emerged as a significant issue in urban traffic.This study employs a progressive"preliminary selection-screening-optimal selection"approach for site selec-tion.First,the preliminary selection of parking sites is conducted by clustering various point-of-interest types.Subsequently,a multi-objective site selection model is developed to maximize the coverage of demand points,minimize construction costs,address the lar-gest population demands,and minimize the distance between demand points and candi-date sites.The non-dominated sorting genetic algorithmⅡ(NSGA-Ⅱ)is adopted to obtain several Pareto optimal solutions.The evaluation indexes are selected according to opera-tors,users,and the public transport system to estimate the Pareto optimal solutions,and then the final location solution can be obtained.The calculation methods for several key parameters are improved during the modeling process.Location potential and location influence coefficient are selected to adjust the number of driverless taxi parking spaces.Additionally,isochrones drawn based on the actual road network and path planning repre-sent the service range of candidate points.Meanwhile,distance based on actual road net-work rather than Euclidean distance is introduced to calculate the distance between candidate points.Finally,a case study shows that the method proposed in this study could reduce the total initial travel time to reach the demand points by 64%,which is indepen-dent of operational scheduling.展开更多
The emergence of driverless cars,also known as autonomous vehicles(AVs),has generated a great deal of excitement and speculation regarding their potential to revolutionize transportation.With advanced sensors and soph...The emergence of driverless cars,also known as autonomous vehicles(AVs),has generated a great deal of excitement and speculation regarding their potential to revolutionize transportation.With advanced sensors and sophisticated algorithms,driverless cars are capable of navigating roads and traffic without human intervention.There will be some help and wide use of driverless cars to reduce traffic accidents.The research will focus on the impact of driverless cars on reducing traffic accident rates in the future.After analyzing the current situation and summarizing some existing studies,the final conclusion is that driverless cars will indeed effectively reduce the traffic accident rate and it will be more widely used in the whole society in the future.展开更多
为了快速准确地检测无人驾驶方程式大赛中赛道锥桶的特征信息,提出一种融合激光雷达点云数据和相机图像数据的检测方法.首先对点云数据进行感兴趣区域(region of interest, ROI)提取并对噪点进行滤波,针对目前地面欠分割和过分割问题引...为了快速准确地检测无人驾驶方程式大赛中赛道锥桶的特征信息,提出一种融合激光雷达点云数据和相机图像数据的检测方法.首先对点云数据进行感兴趣区域(region of interest, ROI)提取并对噪点进行滤波,针对目前地面欠分割和过分割问题引入自适应地面分割算法,并采用欧式聚类对锥桶空间位置信息进行提取;其次采集和标注图像数据集,并使用YOLOv5进行训练后检测,完成锥桶颜色信息的提取;然后将激光雷达检测的锥桶空间位置信息和相机检测的锥桶颜色信息进行融合;最后设计试验进行验证,结果表明:所提出的融合检测方法能够弥补单传感器检测锥桶带来的问题,快速准确地检测出赛道中的锥桶,为规划和决策提供了保障.展开更多
文摘East Japan Railway Company(JR East)is aiming to“realize driverless train operation”as one of the key measures to respond to rapid changes in the business environment.Currently,Automatic Train Operation(ATO)equipment is not installed on the Shinkansen,but there are plans to introduce ATO or driverless operation in the near future.From 2018-2021,the Ministry of Land,Infrastructure,Transport and Tourism(MLIT)held the“ATO Technology Study Group for Railways”in which the concept of technical requirements necessary for driverless operation was discussed.In 2021,JR East conducted the GOA4 demonstration test on the Joetsu Shinkansen.In this test,we were able to confirm the basic functions of Shinkansen vehicles such as automatic departure control,speed control,fixed position stop control,and remote stop control using ATO.We aim to realize unattended operation(GOA4)for deadhead trains between Niigata Station and the Niigata Shinkansen Rolling Stock Center by the end of the 2020 s,and driverless operation(GOA3)for passenger trains of the Joetsu Shinkansen by the mid-2030s and continue to develop the necessary technologies and build systems.
文摘Driverless car,as a direction for future automobile development,greatly improves the efficiency and safety of the traffic system.It’s one of the most popular technical fields.In recent years,driverless car has developed rapidly.The related development is concerned by governments,businesses,consumers and stakeholders widely,and most of countries have been actively studying this technology.This paper first introduces the current development of driverless car at home and abroad.Besides,the basic technologies of driverless car are briefly analyzed.In addition,the author compares the American government’s attitudes with Chinese government’s attitudes towards driverless car.Specifically,the article makes an analysis of contents of literature and periodicals at home and abroad and policies and documents which have already been published.The analysis shows that there is no great difference between the attitudes of Chinese and American governments.Both of two governments actively support the development of driverless car.Finally,this paper expounds the development direction of the driverless car field in future by dividing into two categories through road conditions:automatic driving on expressways and automatic driving in cities.
基金supported by the Natural Science Foundation of Hubei Province(No.2024AFB826)the National Natural Science Foundation of China(No.52472329)the Research Project of Philosophy and Social Sciences of Hubei Provincial Education Department(No.22Y030).
文摘To expedite the large-scale deployment of driverless taxis and advance the autonomous driving industry,research on the location of integrated parking and charging facilities for driverless taxis has emerged as a significant issue in urban traffic.This study employs a progressive"preliminary selection-screening-optimal selection"approach for site selec-tion.First,the preliminary selection of parking sites is conducted by clustering various point-of-interest types.Subsequently,a multi-objective site selection model is developed to maximize the coverage of demand points,minimize construction costs,address the lar-gest population demands,and minimize the distance between demand points and candi-date sites.The non-dominated sorting genetic algorithmⅡ(NSGA-Ⅱ)is adopted to obtain several Pareto optimal solutions.The evaluation indexes are selected according to opera-tors,users,and the public transport system to estimate the Pareto optimal solutions,and then the final location solution can be obtained.The calculation methods for several key parameters are improved during the modeling process.Location potential and location influence coefficient are selected to adjust the number of driverless taxi parking spaces.Additionally,isochrones drawn based on the actual road network and path planning repre-sent the service range of candidate points.Meanwhile,distance based on actual road net-work rather than Euclidean distance is introduced to calculate the distance between candidate points.Finally,a case study shows that the method proposed in this study could reduce the total initial travel time to reach the demand points by 64%,which is indepen-dent of operational scheduling.
文摘The emergence of driverless cars,also known as autonomous vehicles(AVs),has generated a great deal of excitement and speculation regarding their potential to revolutionize transportation.With advanced sensors and sophisticated algorithms,driverless cars are capable of navigating roads and traffic without human intervention.There will be some help and wide use of driverless cars to reduce traffic accidents.The research will focus on the impact of driverless cars on reducing traffic accident rates in the future.After analyzing the current situation and summarizing some existing studies,the final conclusion is that driverless cars will indeed effectively reduce the traffic accident rate and it will be more widely used in the whole society in the future.
文摘为了快速准确地检测无人驾驶方程式大赛中赛道锥桶的特征信息,提出一种融合激光雷达点云数据和相机图像数据的检测方法.首先对点云数据进行感兴趣区域(region of interest, ROI)提取并对噪点进行滤波,针对目前地面欠分割和过分割问题引入自适应地面分割算法,并采用欧式聚类对锥桶空间位置信息进行提取;其次采集和标注图像数据集,并使用YOLOv5进行训练后检测,完成锥桶颜色信息的提取;然后将激光雷达检测的锥桶空间位置信息和相机检测的锥桶颜色信息进行融合;最后设计试验进行验证,结果表明:所提出的融合检测方法能够弥补单传感器检测锥桶带来的问题,快速准确地检测出赛道中的锥桶,为规划和决策提供了保障.
