Electronic and electromechanical apparatus, equipment and devices installed along railway lines for identifying the passage of a train, namely, electronic axle counters; electronic track circuits for identifying occupation of a length of railway line; electronic and electromechanical railway switches and point machines in the nature of computer hardware for use in switching trains; electronic and electromechanical signals for indicating the edges of the track; level crossings in the nature of...

magazine focusing on events and issues relative to crop production management