{"created":"2023-06-19T12:44:04.938408+00:00","id":3462,"links":{},"metadata":{"_buckets":{"deposit":"a0cbde00-418b-4643-8b26-816519e966db"},"_deposit":{"created_by":14,"id":"3462","owners":[14],"pid":{"revision_id":0,"type":"depid","value":"3462"},"status":"published"},"_oai":{"id":"oai:tokyo-metro-u.repo.nii.ac.jp:00003462","sets":["521:600:601:875:1104"]},"author_link":["9523"],"item_2_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-07-18","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"173","bibliographicPageStart":"1"}]},"item_2_creator_2":{"attribute_name":"著者(ヨミ)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"キクチ, ハルミ"}],"nameIdentifiers":[{"nameIdentifier":"9523","nameIdentifierScheme":"WEKO"}]}]},"item_2_date_granted_66":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2013-07-18"}]},"item_2_degree_grantor_64":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"首都大学東京"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"22604","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_2_degree_name_63":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士(観光科学)"}]},"item_2_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"As for the situation of road traffic accidents in Japan in 2011, fatal and injury accidents were 690,000 cases, and the number of casualties was 860,000 persons. The number of traffic accidents has been declining, but is still significant. Promoting more efficient and effective efforts to reduce traffic accidents is also important for roads leading to tourist sites (hereafter, roads to tourist sites) to provide safety and comfort. Trunk roads which play essential roles as roads to tourist sites also account for approximately a half of fatal and injury accidents. The Ministry of Land, Infrastructure, Transport and Tourism designates intersections and road sections of uninterrupted flow on trunk roads with higher rate of or higher frequency of fatal and injury accident as \"accident-prone points,\" and has promoted countermeasures. In order to estimate project effects, the number of fatal and injury accidents and the rate of fatal and injury accidents are used as indicators. Considering the scarcity of traffic accident, I believe that it takes at least several years to confirm the effects of the measures. No method has been established yet to evaluate the effects within several months after implementation of measures. In recent years, efforts to use data such as locations, speeds, and so on from vehicles on roads have been advanced as vehicles are considered as sensor on road, so-called probe-cars. Understanding of the occurrence of accident avoidance behaviors such as sudden braking (rapid deceleration behavior) of vehicles by using this probe information would be useful for analyzing the effects of road traffic safety measures or grasping dangerous points. With these backgrounds, this study used a large amount of probe information collected by automobile manufacturers, and focused on the rapid deceleration behaviors as one of vehicle accident avoidance behaviors to analyze the relation to traffic accidents. In addition, I suggest new evaluation indicators to assess measures for reducing rapid deceleration behaviors, and confirmed their validity. Index values before and after the implementation of road safety projects were compared. Furthermore, as a preventive road traffic safety measure, I suggest the idea of countermeasures for points with a higher potential risk of traffic accidents by using the data of rapid deceleration behaviors. Based on the idea of measures for points with potential risk of traffic accidents, I selected locations with the potential risk of traffic accidents as a model from the roads to tourist sites, and implemented the road safety measure. By analyzing the occurrences of rapid deceleration behaviors before and after the measure, I confirmed the applicability of the evaluation indicators to the measure as well as the effectiveness of the measure itself. The results are shown below: In the chapter 2, I analyzed the occurrences of traffic accidents in Japan. Also, I summarized the development status of ITS technologies in Japan and other countries including collection techniques of probe information. In the chapter 3, I reviewed previous studies. A common issue to previous studies was that their findings had not been considered universal due to lack of enough probe information, limitation to specific type of vehicles or driving characteristics. This study has been innovative for using a great amount of information collected by automobile manufacturers, enabling to replicate general traffic conditions. In the chapter 4, I analyzed the relationship between rapid deceleration behaviors of vehicles obtained from the probe information and the number of traffic accidents. And I found correlation between the occurrences of deceleration at a certain threshold speed and higher and the number of fatal and injury accidents. According to our validation as well as findings from the previous studies, I defined the deceleration speed more than 0.3G as the rapid deceleration behavior. With this definition, I found high correlation in occurrences between the fatal and injury accidents in 10km mesh in Aichi prefecture and the sudden braking. Furthermore, similar to the Heinrich's law established in the area of labor accidents, I confirmed that rapid deceleration was closely related to both serious and minor accidents. In the chapter 5, I confirmed the validity of project evaluation for road traffic safety measures based on factor analyses of rapid deceleration. As evaluation indicators of the road traffic safety measures, I suggested the number of rapid deceleration behaviors, strength of rapid deceleration behaviors, maximum deceleration speed, average strength, and speed before rapid deceleration. As the result of project evaluation of road traffic safety measures at the selected point using these indicators, I confirmed that the number of rapid deceleration behaviors, the strength of rapid deceleration behaviors, and the speed immediately before rapid deceleration changed after implementation of the measure, and found them statistically significant. Thus, the study demonstrates the applicability of these evaluation indicators. In the chapter 6, I selected a model point to implement the measure against potential risk of accident focusing on rapid deceleration, and implemented the measure to analyze the effect. When selecting the model point, I focused on the roads where few safety measures have been implemented but the traffic demand has been increased. From the probe information, I selected locations with large differences in the rate of probe-cars to all traffic between on weekdays and on holidays, and selected a model point from the places where rapid deceleration frequently occurred. I implemented the measure of alerting drivers by road signs, and confirmed the effect of providing information for reducing rapid deceleration for three months after implementation of the measure. Confirmed effect includes reduction in the number of occurrences of rapid deceleration and decline in deceleration behaviors of high strength was found statistically significant. In the chapter 7, I summarized the results of this study as well as the challenges and the potential development in the future. Specifically, it is necessary to use the evaluation indicators of rapid deceleration behaviors to as many as possible cases continuously and on a long-term basis to examine the effectiveness in detail. I need to implement the measure in many model areas with an emphasis on the high potential risk of accidents suggested this time, and believe it is necessary to confirm the effect of road accident reduction. I need to analyze the characteristics of rapid deceleration behaviors on the roads to tourist site, and recommend the necessity to suggest measures to materialize safe and comfortable sightseeing.","subitem_description_type":"Abstract"}]},"item_2_description_5":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"首都大学東京, 2013-07-18, 博士(観光科学), 乙第80号","subitem_description_type":"Other"}]},"item_2_dissertation_number_67":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"乙80"}]},"item_2_subject_22":{"attribute_name":"国立国会図書館分類","attribute_value_mlt":[{"subitem_subject":"UT51","subitem_subject_scheme":"NDLC"}]},"item_2_version_type_16":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"菊地, 春海"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-08-04"}],"displaytype":"detail","filename":"T00295-001_fulltext.pdf","filesize":[{"value":"5.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"T00295-001_fulltext.pdf","objectType":"fulltext","url":"https://tokyo-metro-u.repo.nii.ac.jp/record/3462/files/T00295-001_fulltext.pdf"},"version_id":"89fad921-cf65-478d-a333-11ef83506873"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"プローブ情報を活用した道路交通の安全性評価手法に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"プローブ情報を活用した道路交通の安全性評価手法に関する研究","subitem_title_language":"ja"}]},"item_type_id":"2","owner":"14","path":["1104"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2014-12-15"},"publish_date":"2014-12-15","publish_status":"0","recid":"3462","relation_version_is_last":true,"title":["プローブ情報を活用した道路交通の安全性評価手法に関する研究"],"weko_creator_id":"14","weko_shared_id":-1},"updated":"2023-08-14T05:04:55.427235+00:00"}