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<br />Exhibit 1310-7a Left-Turn Storage Guidelines: Two-Lane, Unsignalized <br /> <br />40 mp <br />h <br />** <br />50 mph* <br />* <br />60 mph** <br />% Total DHV Turning Left (single turning movement)Total DHV*1,000 <br />900 <br />800 <br />700 <br />600 <br />500 <br />400 <br />300 <br />0 5 10 15 20 25 <br />Below curve, storage not needed for capacity. <br />Above curve, further analysis recommended. <br />KEY: <br />1 <br />2 <br />1 <br />2 <br />1 <br />2 <br />1 <br />21,100 <br />* DHV is total volume from both directions <br />**Speeds are posted speeds <br /> <br /> <br /> <br />Index #5