Guess CSX wasn't the first one to identify a large amount of railroad rolling stock using labels.In 1978, a bad batch of 33 wheels from the Southern Wheel Company was suspected in causing several derailments. To quickly identify and eliminate the problem, all cars with 70 ton or less capacity and 33 wheels had to be inspected. If the cars had the recalled wheels they were given a marking like this with a white dot. Cleared cars were given the yellow dot. The mandate came in March of 1978 and all bad wheels were to be identified and replaced by December of that year. (And through December cars with a white dot could not be included in any train carrying hazardous materials.) New cars built during the period were also given the yellow dot at construction. There was no pressing reason to remove the yellow dots, so many stayed on freight cars for decades until they were repainted or retired.

CSX DP stickers look tasteful and well thought out. Almost as good looking as the Lightning bolts they

used to put on AC Traction units.