The nation's freight railroads are going to be able to try relying more on technology and inspect their tracks in person less often after the federal government approved their waiver request on Friday.

The Association of American Railroads trade group asked for the relief from inspection requirements that were written back in 1971 because railroads believe the automated track inspection technology they use today is so good at spotting problems early that human inspections aren't needed as frequently. They say that extended tests that BNSF and Norfolk Southern ran show that safety actually improved even when human inspections were reduced from twice a week to twice a month.

The Federal Railroad Administration didn't go quite that far in its decision, but the agency said railroads will be

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