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Which is an invention that improved safety for railway passengers? refrigerated rail cars Pullman sleeping cars time standardization air brakes
asked
Apr 17, 2016
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Which is an invention that improved safety for railway passengers?
refrigerated rail cars
Pullman sleeping cars
time standardization
air brakes
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high-school
Tyler Pfaff
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Answer:
answer is D
Step-by-step explanation:
Atiana
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Apr 18, 2016
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Atiana
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It was the invention of time standardization that improved safety for railway passengers, since this in many ways led to far fewer train collisions, which were an issue.
Sumit Kumar Gupta
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Apr 23, 2016
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Sumit Kumar Gupta
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