黄河流域影响区（津、冀、苏、皖）1：100万交通数据库（2005年）

本套数据是受黄河影响省市（津、冀、苏、皖）的流域外县级以上公路和铁路数据库，由2005年出版的全国1：100万交通图数字化形成的。交通道路图层要素类代码(高速公路 1 国道 2 省道 3 县道 4 乡道 5 铁路 6) 城镇图层要素类代码(省会 1 省辖市 2 县 3 乡镇 4)。该数据对道路交通，区域发展及经济发展研究都有重要的价值。

This dataset is a database of county-level and above roads and railways outside the Yellow River Basin, covering the provinces and municipalities affected by the Yellow River: Tianjin, Hebei, Jiangsu and Anhui. It was digitized from the national 1:1,000,000 traffic map published in 2005. Feature class codes for traffic road layers (Expressway 1, National Highway 2, Provincial Highway 3, County Road 4, Township Road 5, Railway 6) and feature class codes for urban settlement layers (Provincial Capital 1, Provincial-administered Municipality 2, County 3, Township 4). This dataset holds significant research value for studies on road traffic, regional development and economic development.