Chinese high-speed rail maps

China's conventional high-speed railway network is made up of four components (most of the rail lines fall in the latter three categorie):
1, upgraded pre-existing rail lines that can accommodate high-speed trains,
2, a national grid of mostly passenger dedicated HSR lines (PDLs),
3, other newly-built conventional rail lines, mostly in western China, that can carry high-speed passenger and freight trains,
4, certain regional "intercity" HSR lines.