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<br />Table 11.1 <br /> <br />Tl'Uck adjustment factors. Divide each tlppl'oach volume by tilt' aplnopl'iat(> fartoI'. <br /> <br />T111Ck COlTection Truck COlTectioll Tmck Conection Truck Conectioll <br />% Factor % Factor % Factor % Factor <br />0 1.05 6 0.99 12 0.93 18 0.87 <br />1 1.04 7 0.98 13 0.92 19 0.86 <br /> - <br />2 1.03 8 0.97 14 0.91 20 0.85 <br />3 1.02 9 0.96 15 0.90 25 0.80 <br />4 1.01 10 0.95 16 0.89 30 0.75 <br />5 1.00 11 0.94 17 0.88 35 0.70 <br />-- ~._..- . ._.._.~"- --_.' -~~ <br /> <br />Source: Iowa Department of Transportation Office of Design, 2004, Horizontal intersection desian: rural two lanes <br />(6A-1 ). Ames, Iowa: Iowa Department of Transportation Office of Design, <br /> <br />26 <br />