A driver with 20/40 vision needs 1.6 seconds to read a sign posted on a freeway. A person with 20/20 vision can read this sign at a distance of 250 ft. Do you feel that the driver has sufficient time to read this sign driving at a speed of 60 mph? At what speed would he have to travel just to be able to read the sign? Discuss this problem

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Q: A.1. The three types of sight distance are:

A: Sight Distance:

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