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Traffic Projections and Peak-Hour Volumes on SH 133 <br />. Using primary data col]ected, and data and information provided by <br />CDOH, traffic volumes were projected for the year 1982. Normal growth of <br />I traffic on SH 133 was assumed to be the same as that shown in the CDOH <br />1978 Colorado Traffic Volume Study, or 30a straight-line growth in a <br />r <br />20-year period. <br />f" In order to calculate Average Daily Traffic (ADT) and Average Weekday (AWD) <br />~ volumes, it was necessary to adjust the traffic counts to account for normal <br />seasonal traffic variations. Factors were obtained from CDOH which apply to <br />~_ weekday counts. The calculations are as follows: <br />- • Week 38, Group 2 <br />• Counts for Tuesday-Friday, 9/16 to 9/19 and <br />Monday, 9/22 = 12,189 <br />• ADT seasonal factor = 0.93* <br />• AWD seasonal factor = 0.95* <br />ADT 1L ,589 x 0.93 = 2,267 <br />j'. <br />~: 12,189 <br />AWD = 5 x 0.95 = 2,316 <br />r <br />'` The AWD value of 2316 was used for analysis presented herein. <br />I^ <br />~. Reviewing count summaries by hour on SH T33, reveals a highest peak <br />i`.: hour of 9.6°G of the daily volumes. Ten percent was used in the analysis <br />presented below. <br />l <br />Three components of the vehicle mix on SH 133 were looked at separately: <br />coal haul truck trips, additional employee commuting trips, and other normal <br />vehicle trips. <br />*Note: These factors are exactly the same as the factors for Week 20, <br />the week counts were made by CDOH. <br />-14- <br />