the s1 was so large that it could not negotiate the track clearances on most of the lines of the prr system, in its brief service life it was restricted to the mainline between chicago, illinois and crestline, ohio (283 miles/446 km). it was assigned to the fort wayne division and based at the crestline engine-house. base on photographic evidence, s1 hauled the broadway limited (new york to chicago) and liberty limited (washington d.c to chicago) in the first few months of its revenue service, and is then assigned to haul other much popular, heavier and commercially successful passenger trains such as the general, the trail blazer and the golden arrow on this route.