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Coastal Level of Service D Standards 104 <br /> for Other Major Thoroughfares * <br /> 55 MPH 1 Lane Per Direction 1 Lane Per Direction WCLTL <br /> Urban Suburban Rural Urban Suburban Rural <br /> 12 foot lanes 15100 15800 16400 16600 17200 17800 <br /> 11 foot lanes 14600 15300 15900 16100 16600 17200 <br /> 10 foot lanes 14100 14700 15300 15500 16100 16600 <br /> 9 foot lanes 13600 1 14200 1 14800 15000 1 15500 1 16000 <br /> 45 MPH 1 Lane Per Direction 1 Lane Per Direction WCLTL <br /> Urban Suburban Rural Urban Suburban Rural <br /> 12 foot lanes 13200 13800 14600 14500 14900 16000 <br /> 11 foot lanes 12800 13300 14100 14000 14400 15500 <br /> 10 foot lanes 12300 12900 13600 13500 13900 15000 <br /> 9 foot lanes 11900 12420 13140 13050 13400 14400 <br /> 35 MPH 1 Lane Per Direction 1 Lane Per Direction WCLTL <br /> Urban Suburban Rural Urban Suburban Rural <br /> 12 foot lanes 11100 12600 12700 14000 <br /> 11 foot lanes 10700 12200 12300 13500 <br /> 10 foot lanes 10400 11800 11900 13100 <br /> 9 foot lanes 10000 1 11300 1 11400 12600 <br /> 25 MPH 1 Lane Per Direction 1 Lane Per Direction WCLTL <br /> Urban Suburban Rural Urban Suburban Rural <br /> 12 foot lanes 11000 12700 <br /> 11 foot lanes 10600 12300 <br /> 10 foot lanes 10300 11900 <br /> 9 foot lanes 9900 11400 <br /> Uses "Principal Arterials" Facility Type in NCLOS <br /> * Decrease in Lane Width Capacity calculated via 2000 Highway Capacity Manual <br /> lane-width adjustment factor for saturation flow rate <br /> See Appendix D1 for HCM 2000 Urban Arterial Equations <br /> Use Appendix D2: Coastal Major Thoroughfare Inputs for adjustments <br /> NOTE: Lane Width is adjusted downward by 3.33% per less foot of pavement <br /> and rounded to the nearest hundred <br /> 9 Updated 10/14/2011 <br />