\ Problem 1: (i) A driver with

(20)/(40)

vision traveling at 55 mph desires to exit. If 5-inch letters are used, what is the minimum distance that the sign should be placed ahead of the exit? Use

2sec

reaction time, ramp exit speed as

30mph

; coefficient of friction

=0.15

; a driver with

(20)/(20)

vision can read a sign at

55ft

per inch of letter height\

10pts

CVEN 4320, HIGHWAY ENGINEERING: Final Exam--Fall 2023 Answer ALL problems Problem 1: (i) A driver with 20/40 vision traveling at 55mph desires to exit. If 5 -inch letters are used, what is the minimum distance that the sign should be placed ahead of the exit? Use 2sec reaction time, ramp exit speed as 30mph; coefficient of friction =0.15; a driver with 20/20 vision can read a sign at 55ft per inch of letter height 10pts