By placing K-Rail down the center median, where the yellow delineators are now, not much change in the roadway width, It appears presently there is already 2' from inside of yellow dbl line to insdie of the other dbl yellow line in most places. As the base of K-Rail is 2' wide, they should fit with no major adjustments to the roadway. The newly designed 55 mph attenuator are only slightly larger than the width of the K - Rail and could fit at each end for turn-out and turn pockets.