Transport: Danger Units

"The energy to be absorbed if we strike an object while running 25 miles an hour is just the same as if we fell from a height of 20.9 feet ... it is possible to survive this impact although it is just about the shock limit for the human body ... we call this quantity . . . one Danger Unit."

Thus did Travelers Insurance Co. last week flip before U. S. motorists another semaphore to slow the speeding driver, who in 1938 was responsible for almost 27% of the 32,000 deaths and 17% of...

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