▁as ▁well ▁as ▁ 1 0 ▁percent ▁higher ▁spe eds ▁in ▁curves . ▁The ▁service ▁allowed ▁passengers ▁taking ▁the ▁morning ▁train ▁from ▁Os lo ▁to ▁arrive ▁in ▁Mo ▁i ▁R ana ▁in ▁the ▁evening . ▁The ▁class ▁was ▁also ▁used ▁on ▁the ▁Ar end al ▁Line ▁and ▁the ▁Sol ør ▁Line . ▁It ▁remained ▁in ▁used ▁on ▁the ▁Ar end al ▁Line ▁until ▁ 1 9 9 5 , ▁when ▁the ▁line ▁was ▁elect r ified . ▁ ▁In ▁ 1 9 9 3 , ▁N SB ▁announced ▁that ▁the ▁traffic ▁around ▁Tr ond heim ▁would ▁become ▁the ▁Tr ø nd el ag ▁Comm uter ▁Rail , ▁which ▁would ▁take ▁over ▁most ▁of ▁the ▁Class ▁ 9 2 ▁trains . ▁The ▁service ▁started ▁on ▁ 1 ▁September ▁ 1 9 9 3 . ▁The ▁changes ▁to ▁the ▁schedule ▁involved ▁almost ▁a ▁dou bling ▁of ▁the ▁number ▁of ▁depart ures , ▁particularly ▁between ▁Tr ond heim ▁and ▁St j ø rd al , ▁where ▁a ▁one - hour ▁head way ▁was ▁introduced . ▁The ▁service ▁from ▁Tr ond heim ▁to ▁Ste ink jer ▁had ▁ten ▁daily ▁round ▁tri ps . ▁While ▁local ▁trains ▁had ▁existed ▁previously ▁north ▁of ▁Tr ond heim , ▁the ▁services ▁south ▁to ▁O pp dal ▁were ▁all ▁new ▁in ▁an ▁area ▁which ▁was ▁previously ▁only ▁served ▁by ▁inter city ▁and ▁night ▁trains . ▁The ▁initial ▁services ▁consisted ▁of ▁four ▁services ▁from ▁Tr ond heim — n orth wards ▁along ▁the ▁Nord land ▁Line ▁to ▁Ste ink jer , ▁east ▁along