Railroad car wheel detector using hall effect element
Railroad car wheel measuring apparatus
Railroad switch heating control
Railroad switch point position indicator
Railroad switch point position sensing system and method
Railroad trackwork switch point position status indicator
Railway freight car identification system
Railway switch circuit controller
Railway switch circuit controller
Railway switch machine point detection system
Railway switch mechanism
Railway track mounting arrangement
Railway vehicle wheel detector utilizing magnetic differential b
Railway wheel counter and block control systems
Railway wheel sensors
Remote system for monitoring and controlling railroad...