LORAN is over. However there might be some foreign countries that still use it on a very limited basis. LORAN was disestablished in the early 90s as a means of navigation. The DGPS is a terrestrial based system that is used By Truckers, railroads, farmers (very large corporate farming applications), barges on navigible Rivers, large ports and harbors etc...
The Coast Guard maintains the DGPS system and is supported through MOU’s for the Department of Transportation and maybe for the Department of Agriculture as well.
But I am hardly the expert, however what perked my interest about the DGPS system was that large Farms that are so big that in order to hoe, disc, plant disc straight lines for miles they actually use the DGPS to keep their tractors on a track so that the farming is done accurately and no space is wasted because of variances in plow lines.
As far as trains go, trains move in what are referred to as “blocks” and there can only be one train in one particular Block. In order to maintain this safe distance trains incorporate the DGPS system so that they can maintain spaced in blocks and maintain the spacing. That does not explain errant drivers or impaired operators which cause accidents and other variants causing trains to wreck but these variances I do not believe are DGPS related but rather human error for the most part.
“LORAN is over. “
But not E-LORAN.