SU0014621 - Laserfiche WebLink

Home Browse Search

Existing Traffic Conditions The existing peak-hour traffic volumes at the key intersections have been estimated from recent weekday, peak-period turning movement traffic counts . The existing turning volume levels are presented in the intersection diagrams of Appendix B , labeled "EX" . The other volumes shown in these diagrams are discussed below under "TRAFFIC IMPACTS' . The intersection traffic counts have been analyzed to determine the existing peak-hour traffic conditions, using the procedures of •Interim Materials on Highway Capacity* (Circular 212, TRB, 1980) . The conditions were quantified using the usual concepts of Levels of Service (LOS) and volume-to-capacity (V/C) ratios. The tabulation below presents a summary of the relationship between Level of Service, V/C ratio, and the relative delays associated with each service level . The policy of the City of Stockton is to consider Level of Service C or better traffic conditions as being within the acceptable range, and Levels of Service D, E, and F conditions as being in the unacceptable range. Level of V/C Ratio Service Range Conditions A < 0. 61 Minimum delay B 0. 61 - 0. 70 Increasing delay C 0.71 - 0.80_ with increasing V/C ratio D 0.81 - 0. 90 Significant delay E 0. 91 - 1 . 00 Excessive delay F > 1 .00 Long periods of delay The results of this analysis are presented in Table I for each of the key intersections analyzed herein. Also shown are the type of intersection controls currently at each location. At those unsignalized intersections with STOP sign controls on the minor street approaches , the V/C ratios and levels of service shown apply only to the traffic movements on the minor street approaches ; all other traffic movements at these intersections experience conditions of 2 Joseph A.Holland Consulting Traffic Engineer vlL