▁since ▁ 2 0 1 0 ▁a ▁subs idi ary ▁of ▁C ater p ill ar ) ▁E MD ▁ 7 1 0 ▁engine ▁and ▁E MD ▁D 4 3 ▁electric ▁mot ors ▁with ▁associated ▁electronic ▁controls ▁( except ▁for ▁the ▁Euro ▁ 3 0 0 0 ▁AC ▁introduced ▁in ▁ 2 0 1 1 , ▁which ▁uses ▁E MD ▁AC ▁electric ▁mot ors ). ▁Thus ▁E MD ▁supplies ▁the ▁entire ▁engine ▁( see ▁also ▁prime ▁m over ) ▁and ▁power ▁transmission ▁system ▁for ▁these ▁locomot ives ▁including ▁the ▁generator . ▁ ▁The ▁rig id ▁body shell ▁show ▁technical ▁similar ities ▁with ▁the ▁prede cess ors ▁( R EN FE ▁Class ▁ 3 3 4 ▁and ▁E WS ▁class ▁ 6 7 ). ▁The ▁design ▁is ▁mod ular ▁allowing ▁easy ▁access ▁and ▁change ▁of ▁internal ▁components . ▁ ▁V oss lo h ▁suggests ▁that ▁the ▁locomot ives ▁could ▁be ▁supplied ▁with ▁alternative ▁engines ▁subject ▁to ▁the ▁customers ▁dem ands . ▁ ▁The ▁tw in ▁c abs ▁have ▁a ▁central ▁driving ▁position ▁with ▁the ▁controls ▁arranged ▁around ▁the ▁drivers ▁seat , ▁the ▁cab ▁is ▁air - condition ed ▁and ▁temperature ▁controlled ▁and ▁designed ▁to ▁minim ise ▁noise . ▁ ▁Cold ▁weather ▁variants ▁are ▁available ▁- ▁with ▁additional ▁devices ▁to ▁prevent ▁snow ▁causing ▁problems . ▁ ▁As ▁the ▁locomot ives ▁are ▁designed ▁specifically ▁with ▁the ▁European ▁rail ▁network ▁in ▁mind , ▁they ▁can ▁be ▁fitted ▁a ▁variety ▁of ▁different ▁safety ▁systems ▁and ▁are ▁prepared ▁for ▁the ▁E T CS ▁( Europe an ▁Train ▁Control ▁System