Agenda - 03-07-2019 8-f Efland-Buckhorn-Mebane - Attachment

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Efland-Buckhorn-Mebane Access Management Plan intersection and begin maneuvers to negotiate it. The upstream area consists of distance for travel during a perception-reaction time, travel for maneuvering and deceleration, and queue storage. The functional area also includes the length of road downstream from the intersection needed to reduce conflicts between through traffic and vehicles entering and exiting a property. 6. Conflict Points Conflicts points are commonly used to explain the accident potential of a roadway. Access management strategies are typically designed to reduce the number and density of conflict points. What is a conflict point? A conflict point is the point at which a highway user crossing, merging with, or diverging from a road or driveway conflicts with another highway user using the same road or driveway. It is any point where the paths of two through or turning vehicles diverge, merge, or cross. 7. Speed Differential Between Turning Vehicles And Through Traffic Speed differential is a simple yet important concept that forms the basis for many access management measures. What is speed differential? Speed differential is the difference between the speed of vehicles that are continuing along the main roadway versus those that are entering and exiting the driveway For instance, if through traffic generally moves at 35 miles per hour and cars have to slow to 10 miles per hour to enter a driveway, the speed differential at and near that driveway is 25 miles per hour. Why is speed differential important? A speed differential above 20 miles per hour begins to present safety concerns. When the speed differential approaches 30 to 35 miles per hour, the likelihood of a collision between fast moving through vehicles and turning vehicles increases very quickly. 8. Benefits Of Access Management An effective, local access management program can play an important role in preserving highway capacity, reducing crashes, and avoiding or minimizing costly remedial roadway improvements. The traveling public would then benefit from faster and safer travel. The great majority of businesses would benefit from increased economic vitality along a well-managed corridor. Taxpayers would benefit from more efficient use of existing facilities. And public agencies would benefit from the relatively low cost of access management; they could then use their resources for other needs.