engine speed range, most frequently used during engine field operation, which lies between the low and high speeds, as set out in Annex III to this Directive
Good to know
FI: moottorin käyttökierrosnopeuden alue [T50285]
DE: Motorbetriebsdrehzahlbereich [T50285]
FR: gamme de régimes d'exploitation du moteur [T50285]
'operating speed' - "käituskiirus" [TSR]
