12-1 运输线路基本情况
Basic Statistics on Transportation Routes
单位：公里 |  |  |  |  | (km)
指标 | Item | 2000 | 2003 | 2004 | 2005
铁路营业里程 | Lengh of Railways in Operation | 2924 | 2772 | 2774 | 2802
复线里程 | Double-Track | 1836 | 1273 | 1282 | 1247
自动闭塞里程 | Automatic Switching | 1751 | 1569 | 1572 | 1504
电气化线路里程 | Lengh of Electrified Railway | 672 | 1424 | 1470 | 1245
内燃机牵引线路里程 | Lengh of Diesel Engine | 3086 | 1121 | 1304 | 1557
无缝线路里程 | Lengh of Seamless Track | 869 | 1373 | 1371 |
公路线路里程 | Lengh of Highways | 60848 | 85233 | 87875 | 88200
有铺装路面（高级） | Paved Highways | - | - | 16345 | 19228
未铺装路面（中低无） | Non-Paved Highway | - | - | 59549 | 56975
等级公路 | Expressway and ClassⅠto Ⅳ Highway | 33380 | 39689 | 44411 | 45801
高速 | Expressway | 449 | 1218 | 1218 | 1403
一级 | First Class | 239 | 468 | 488 | 530
二级 | Second Class | 3761 | 5173 | 5385 | 5563
等外路 | Highway Below Class Ⅳ | 27468 | 45544 | 43465 | 42399
内河航道 | Lengh of Navigable Inland Waterway | 10041 | 11968 | 11968 | 11968
管道线路里程 | Lengh Of Petroleum And Gas Pipeline | 164 | 168 | 168 | 168