Circulating cars for power supply

The dataset collects the annual data, for each municipality of the metropolitan area of Bologna, of the cars circulating in the name of the residents. The data are sorted according to the type of fuelling equipment of the cars (petrol, diesel, liquid gas, methane).The annual data files are issued thanks to an agreement between the Municipality of Bologna and the Automobile Club of Italy (ACI) and come from the database of the Public Motor Vehicle Register (PRA). The above-mentioned Convention expired in 2018. The data of the following years are extracted from the opendata portal of the Emilia Romagna Region (see).With the new agreement with ACI, the extracted data have a different structure and refer only to vehicles. The reference datasets can be reached at the following links:Circulation of vehiclesFood and environmental classification (EURO) vehicles Bologna本数据集收录博洛尼亚都会区各自治市以居民名义登记的在册流通汽车年度数据。数据按汽车燃料类型分类，涵盖汽油、柴油、液化石油气、甲烷四类。早期年度数据文件依托博洛尼亚自治市与意大利汽车俱乐部（Automobile Club of Italy, ACI）达成的合作协议发布，数据源自公共机动车登记册（Public Motor Vehicle Register, PRA）数据库。该合作协议于2018年失效。后续年度数据则取自艾米利亚-罗马涅大区开放数据门户（详见对应链接）。在与ACI达成新合作协议后，本次提取的数据结构有所调整，且仅涵盖机动车相关信息。相关参考数据集可通过以下链接获取：车辆流通情况、博洛尼亚机动车欧洲排放标准（EURO）与环保分级。