ano ▁Sur , ▁Ur qu iza ▁and ▁S arm iento . ▁Most ▁of ▁the ▁signals ▁remain ▁active . ▁Among ▁their ▁products ▁are ▁rail road ▁crossing ▁sign alling ▁parts , ▁brand ed ▁with ▁the ▁GR SA ▁logo , ▁instead ▁of ▁the ▁usual ▁G RS . ▁This ▁facility ▁was ▁closed ▁in ▁the ▁early ▁ 1 9 8 0 s . ▁ ▁In ▁ 1 9 8 6 , ▁G RS ▁joined ▁with ▁China ▁National ▁Railway ▁Sign al ▁& ▁Communic ation ▁Group ▁Corporation ▁( CR SC ) ▁to ▁form ▁the ▁Chinese - American ▁Sign al ▁Company ▁( C AS CO ) ▁in ▁Shang hai , ▁China , ▁which ▁produces ▁products ▁and ▁systems ▁for ▁rail ways ▁in ▁the ▁People ' s ▁Republic ▁of ▁China . ▁ ▁In ▁ 1 9 8 9 , ▁G RS ▁was ▁acquired ▁by ▁the ▁Italian ▁company ▁S as ib ▁and ▁joined ▁the ▁S as ib ▁Rail ways ▁group . ▁From ▁its ▁found ing ▁until ▁ 1 9 9 3 , ▁G RS ▁main ▁office ▁and ▁manufact uring ▁facilities ▁were ▁located ▁at ▁ 8 0 1 ▁West ▁Avenue ▁in ▁Ro chester . ▁In ▁ 1 9 9 3 , ▁it ▁moved ▁to ▁two ▁new ▁sub urban ▁facilities : ▁administration ▁and ▁engineering ▁to ▁S aw gr ass ▁Drive ▁in ▁Bright on , ▁and ▁manufact uring ▁to ▁John ▁Street ▁in ▁West ▁Henri etta . ▁In ▁ 1 9 9 8 , ▁it ▁became ▁part ▁of ▁Al st om , ▁when ▁Al st om ▁acquired ▁S as ib ▁Rail ways . ▁The ▁G RS ▁name ▁is