A lane closure is required for line striping work on a limited access highway. With a posted speed limit of 65 mph, the closed lane at this point of the highway is 14 feet in width. What is the minimum desirabl e length for merging tape under the given conditions?

A lane closure is required for line striping work on a limited access highway. With a posted speed limit of 65 mph, the closed lane at this point of the highway is 14 feet in width. What is the minimum desirabl e length for merging tape under the given conditions?