A northbound Acela Express races through Perryville, MD catching the last light of day crossing the Susquehanna River while en route to Wilmington, DE and points north.
A continuously growing album of photos that IMHO reveal the awesome and seldom-seen beauty of the railroad world from the dimming of day to dawn's early light! From dusk to dawn, trains roll on! (I'm still finding gems of sunset-to-sunrise surprises!)
Acela (US), TGV (FR), Velaro (Ger, although there are British, Chinese and Russian versions as well)
There are other systems, such as the Japanese Shinkansen.