the track in N-scale layouts is 9 mm wide, meaning that the whole system had to fit in just 23 x 20 mm 2, the frontal area of a typical train car. One of the few cameras that fit within that ...

The sensor was small enough for an N-gauge train, which translates to 1:148 scale or about 9mm from rail to rail. His idea was to build a tiny control board that could fit inside the locomotive ...

The Association of American Railroads has asked the Federal Railroad Administration to allow less frequent visual track ...

it requires them to walk along tracks and conduct measurements manually using track gauge meters coupled with visual surveys. This kind of inspection is labor-intensive (subjecting the inspector ...