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AUTOMATIC RAILWAY GATE CONTROL SYSTE M

AUTOMATIC RAILWAY GATE CONTROL SYSTE M. Railroad Crossing Through Ages:. Previously, no gate or barrier was used at rail crossings. After some period, flagmen were posted to rail crossings to warn the traffic about the incoming train. Generally they used flag or lamp to do their job.

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Asif jahangirchowdhury - PowerPoint PPT Presentation

AUTOMATIC RAILWAY GATE CONTROL SYSTE M