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5.12 TRAFFIC AND TRANSPORTATION Table 5.12-2 is a summary of the daily traffic volumes and V/C ratios for existing conditions. All segments operate at an acceptable LOS,with the exception of North Thornton Road,between West Eight Mile Road and North Devries Road (LOS E, at the limit of operating at LOS F),between North Devries Road and Frontage Road (LOS D), and between De Broggi Road and SR 12 (LOS F). 5.12.1.2.2 Existing Intersection Conditions Existing afternoon intersection peak-hour turning movement volumes were obtained from the City of Lodi, and illustrated in Figure 5.12-3. Peak hour turning movement counts were adjusted to reflect 2:00 PM-3:00 PM traffic conditions. This time period (2:00 PM-3:00 PM) was selected for analysis based on the expected construction approach. During construction, the end of the first shift will coincide with the beginning of the second shift, so the worst case scenario for traffic would occur between 2:00 PM and 3:00 PM. The analysis of the 2:00 PM-3:00 PM period was based on Caltrans' Freeway Performance Measurement System(PeMS). With PeMS,the proportion of the traffic that would be circulating during the 2:00 PM-3:00 PM time frame was assessed using freeway mainline volume counts for the 2:00 PM-3:00 PM and 4:00 PM-5:00 PM time periods. The ratio of the 2:00 PM-3:00 PM traffic to the peak traffic is approximately 90 percent. The analysis focused on the afternoon period,because that was the highest volume of construction traffic. Also,morning turning movement counts were not available. Traffic conditions at intersections were evaluated using the Synchro software (Trafficware, Version 6). Synchro is a traffic operations analysis tool that incorporates analytical tools from the 2000 HCM. For intersections,the resulting delay is expressed using LOS,where LOS A represents free-flow activity and LOS F represents overcapacity operation. The relationship of delay and LOS at signalized intersections is summarized in Table 5.12-3. San Joaquin County uses LOS D as a threshold at intersections on minor arterials and roadways of higher classification;otherwise,LOS C is used as a threshold. Delays and LOS for the intersections in the vicinity of the project site are presented in Table 5.12-4. Delays for the entire intersection are available for signalized intersections;if the intersection is stop-controlled,the delay for the controlled approach is available. All intersections operate at an acceptable level of service. 5.12.1.3 Truck Routes—Weight and Load Limitations As indicated by County staff,San Joaquin County has its own restrictions on County roads in addition to the California Vehicle Code (CVC) Sections 35550-35559. In 35 mph zones,the weight limitation is seven tons, and in 25 mph zones, the restriction drops to five tons. No map or list of roads is available. 5.12-8 SAC/371322/082380003(LEC_5.12_TRAFFIC_AND_TRANSPORTATION.DOC)