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Sara ali ojalvo 11/19/2016 |
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TRAIN WHISLTE BLASTS AND WHAT THEY MEAN
Two short -- train starting to move one long -- approaching station two long , one short , one long-- approaching street crossing three short (standing still)-- ready to back up three short (moving)-- stop at next station repeated short--warning to clear tracks four short--asks operator if track is clea4 |