The locomotives were developed specially for the steep ramps in the K.Bay.Sts.B.'s territory: the railway line from Sonneberg-Probstzella, the Spessart ramp, the Franconian Forest Railway (Frankenwaldbahn), the Schiefe Ebene (lit: inclined plane), and the line from Eger to Asch (today Cheb-Aš).
Along with other high performance steam engines like the "H02 1001" and a coal dust-fired Prussian G 12 (DRG BR 58), loco no.