▁also ▁through ▁data ▁transmission ▁systems ▁such ▁as ▁voice - fre quency ▁channel ▁multiple x ers , ▁fi ber - opt ical ▁lines ▁and ▁radio ▁channels . ▁MP B ▁has ▁space - s aving ▁design ▁and ▁little ▁maintenance ▁requirements . ▁ ▁A LS R ▁ ▁A LS R ▁is ▁spe cially ▁designed ▁for ▁continuous ▁transmission ▁to ▁the ▁cab ▁of ▁data ▁on ▁occupied ▁ahead ▁sections ▁with ▁due ▁consideration ▁of ▁position ▁of ▁switch es ▁and ▁light - signal ▁aspects ▁over ▁the ▁radio ▁channel , ▁which ▁is ▁used ▁as ▁a ▁physical ▁link ▁in ▁the ▁system . ▁ ▁The ▁system ▁enables ▁to ▁determine ▁train ▁position ▁accurate ▁to ▁ 1 ▁meter ▁at ▁speed ▁of ▁ 4 0 0   km / h . ▁Al ong ▁the ▁rail road ▁prec inct ▁there ▁is ▁continuous ▁digital ▁radio ▁channel ▁that ▁provides ▁reliable ▁and ▁secure ▁transmission ▁of ▁A LS ▁c oded ▁data , ▁remote ▁di agnostic ▁and ▁cab ▁signal ing ▁monitoring , ▁which ▁impro ves ▁safety ▁and ▁techn ological ▁effect iveness ▁of ▁transport ation ▁service . ▁ ▁A TR S ▁« K hr on os » ▁ ▁External ▁links ▁ ▁Official ▁website ▁ ▁Category : Man ufact uring ▁companies ▁of ▁Russia ▁Category : Comp an ies ▁based ▁in ▁Y ek ater in burg ▁Category : Comp an ies ▁established ▁in ▁ 1 9 9 1 ▁Category : Russ ian ▁br ands <0x0A> </s> ▁HMS ▁Are th usa ▁was ▁a ▁Le ander - class ▁fr ig ate ▁of ▁the ▁Royal ▁Navy . ▁She ▁was , ▁like ▁the ▁rest ▁of ▁the ▁Le and ers ,