A six lane free (three lane in each direction) has a downgrade of 2%. The lane width is 12 feet and the freeway has a shoulder of 6 feet. There is a horizontal curve of radius 500 ft on the freeway and the speed limit is 30 mph. A wall is being constructed at the edge of the shoulder. Does the freeway have adequate stopping sight distance. Assume reaction time of 2.5 seconds and design deceleration rate of 11.2 ft/sec^2. Format > BIU ...