Okay, so how long until there are functional Z scale systems?
"BNSF Railway is deploying high-speed onboard cameras capable of recording images, at speeds up to 70 mph, of rail surface defects and other visible flaws like missing bolts, according to a recent report in The Dickinson Press of Bismarck, N.D.
BNSF’s Track Health Optical Recognition program, which is nearing the end of a year-long, 3,000-mile pilot program, was one of many technologies showcased by the company at the North Dakota Capitol on Jan. 22.
“We’re using this opportunity to talk about the technology we have begun to leverage and continue to leverage,” spokeswoman Amy McBeth told The Dickinson Press."
https://www.railwayage.com/analytics/bnsf-cameras-pinpoint-rail-wheel-problems/