| 21. | Japan issued guidelines for such warning devices in January 2010 and the US approved legislation on December 2010.
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| 22. | A "'train horn "'is a powerful air horn that serves as an audible warning device on switching operations.
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| 23. | Swissair spokesman Erwin Schaerer said a collision with the KLM plane was avoided thanks to electronic warning devices.
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| 24. | Local engineers will, however, have to request warning devices by type and location before any action is taken.
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| 25. | Human observation and the lightning warning device, used about 40 minutes earlier, had removed that notion from his mind.
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| 26. | Dedra Shanklin's lawsuit against Norfolk Southern invoked Tennessee law and said the railroad failed to install adequate warning devices.
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| 27. | The pilots of both planes reported that their collision warning devices went off, forcing them to take emergency measures.
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| 28. | A prototype warning device already in early stages of development may be ready for testing within two years, they said.
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| 29. | The early warning devices were a critical part of evacuation plans for residents near the volcano during the current rainy season.
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| 30. | Just before the crash, the Conrail engineer had used marijuana and had intentionally disabled an audible warning device in his cab.
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