Orange County NC Website
HCS: Unsignalized Intersections Release 2.1g 85S86AME.HCO Page 2 <br />Worksheet for TWSC Intersection <br />Step 1: RT from Minor Street <br />WB <br />EB <br />-------------------------------------------------------- <br />Conflicting Flows: (vph) <br />487 <br />Potential Capacity: (pcph) <br />784 <br />Movement Capacity: (pcph) <br />784 <br />Prob. of Queue -Free State: <br />0.78 <br />Step 2: LT from Major Street <br />SB <br />NB <br />Conflicting Flows: -(vph) <br />928 <br />Potential Capacity: (pcph) <br />619 <br />Movement Capacity: (pcph). <br />619 <br />Prob. of Queue -Free State: <br />- - <br />0.92 <br />-EB <br />Step 4: LT from Minor Street------- <br />-------------------------------- <br />------ <br />WB------- <br />- <br />- <br />Conflicting Flows: (vph) <br />1436 <br />it c h <br />ac ( ). <br />Potential .Ca P y' (pcph) <br />6 <br />156 <br />Major LT, Minor TH <br />Impedance Factor: <br />0.42 <br />Adjusted Impedance Factor: <br />0.92 <br />Capacity Adjustment Factor <br />due to Impeding Movements <br />0.92 <br />Movement Capacity: (pcph) <br />143 <br />Intersection <br />Performance Summary <br />Avg. <br />95% <br />Flow- Move Shared <br />Total <br />Queue <br />Approach <br />Rate'. Cap Cap <br />Delay <br />`. Length LOS <br />Delay <br />Movement (pcph) (pcph) (pcph)(sec <br />/veh) (veh) <br />(sec /veh) <br />WB L 106 143 <br />88.6 <br />6.1 F <br />37.5 <br />WB R 169 784 <br />5.9 <br />0.9 B <br />NB L. 51 619 <br />6.3 <br />0.2 B <br />0.5 <br />Intersection Delay = 5.7 sec /veh <br />