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Cripple Creek 8 Victor Gold Mining Company Traffic Study <br />vph during the same period. At both of the observed locations, most traffic on the highway / <br />county road was associated with the mine access. <br />Capacity Analysis of Existing Conditions <br />Since traffic counts for this study were taken during the winter months, they do not accurately <br />reflect the higher background traffic volume of summer months. For the analysis of existing <br />conditions, the background 'through" traffic was adjusted to equal 10% of the Average Daily <br />Traffic reported for the facility by CDOT or Teller County. Most roadways in the US <br />experience 8-12% of their daily traffic volume during peak periods, and 10% was deemed to <br />be an appropriate estimate of the summer peak period traffic for these facilities. Background <br />traffic estimates were added to counted fuming movement traffic to arrive at the "design hour <br />volume" for use in intersection capacity assessments. Existing conditions "design hour" <br />traffic volume for the two access locations under study are shown in Figures 3 & 4. <br />FIGURE 3 -Existing Peak Hour Traffic, Ironclad Access <br />AM/PM Peak Hour Volume <br />• <br />Intersection operations are measured using avolume-to~apacity ratio, or using average <br />vehicle delay. Operating conditions are expressed as Level-of-Service (LOS), with <br />designation of conditions with letters ranging from "A" to "F", much like school grades. LOS <br />A represents uncongested conditions with free flow traffic and little delay, while LOS F <br />represents significant congestion, long queues, and lengthy delays. <br />Both of the access locations currently function as unsignalized intersections, with access <br />drive traffic yielding to highway traffic. Highway Capacity Manual procedures were utilized in <br />the form of Highway Capacity Software to assess operating LOS for each access <br />intersection. Under existing conditions, the Ironclad intersection operates at overall LOS A <br />during both morning and evening peak periods with intersection delay of only 1.2-1.3 <br />seconds/vehicle on average. The Ironclad approach and left-turn approach from CR82 also <br />• both operate at LOS A for both peak periods. <br />TranSystems Corporation -March 7, 2000 Page 11 <br />