In our plan we are going to shift northbound and southbound lanes of US 25 around our activity area using the portion of the road that access Boone Gap. We will create a stop sign intersection at the intersections with US 25 for Boone Gap local traffic. Let's practice taper design. If we were establishing a shifting taper on a highway with a 55 mph speed limit what is the maximum distance between barrels being used as taper devices or channelizers? Remember that in the scenario presented we are shfiting both north and south bound lanes over one lane. The norhtbound traffic can shift over into an old pre-existing lane that now serves as a shoulder. We will use 12 feet as the width of offset. 60 feet 30 feet 55 feet 12 feet