Problem 3: 15. A driver with 20/20 vision traveling at 55 mph in the median lane desires to exit ...

Problem 3: 15. A driver with 20/20 vision traveling at 55 mph in the median lane desires to exit the freeway at the exit ramp. If 5-inch letters are used, what is the minimum distance that the sign should be placed ahead of the ramp exit? (Some assumption that would be helpful are perception-reaction time 2 seconds; ramp exit speed 30 mph; coefficient of friction-0.15; a driver with 20/20 vision can read a sign at 55 ft per inch of letter height.) Discuss your results. (15 pts)