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Mike Tassano January 31, 2025 Page 6 of 37 The Bernal Avenue (between Sunol Boulevard and Vineyard Avenue) and Stanley Boulevard (between Bernal Avenue and Isabel Avenue) routes were also analyzed to understand how the redistribution of traffic might affect them. In the case of Bernal Avenue, the data suggests the extension potentially attracts traffic to this road given the top origins and destinations of trips using this route. This effect is present in both directions and peak hours, although it is more pronounced during the PM peak hour. On the other hand, the extension also potentially adds trips coming from the Livermore area to Stanley Boulevard. This happens mostly in the westbound direction during the AM peak hour, and in the eastbound direction during the PM peak hour. Another interesting Pleasanton travel pattern analysis aspect is the cut-through traffic using local streets trying to avoid the I-680/I-580 interchange during the AM and PM peak hours. Cut- through traffic is defined as traffic that passes through a city and has neither an origin nor destination inside of it. StreetLight data was used to quantify the cut-through traffic through Pleasanton given that a new north-south roadway like the proposed El Charro Road extension could also attract cut-through traffic. This analysis focused on traffic going from east to south in the AM peak hour, and from south to east in the PM peak hour. Figure 2 and Figure 3 show the existing freeway traffic cutting through Pleasanton as a proportion of the vehicles traveling from I-580 at Isabel Avenue to I-680 at Sunol Boulevard, and vice versa, respectively. These proportions show that around 30% of vehicles going from I-580 at Isabel Avenue to I-680 at Sunol Boulevard during the AM peak hour cut through Pleasanton using local roads. During the PM peak hour, the proportion of traffic cutting through local roads in the reverse direction is 15%. Furthermore, the cut-through traffic represents between 10% and 15% of the total traffic on Sunol Boulevard. Since cut-through traffic exists on Pleasanton roadways today, it is expected that some of the traffic on El Charro Road will be cut-through traffic in the future. The Alameda CTC travel demand model projects that around 15% of the El Charro Road traffic would be regional traffic, meaning that at least one of the ends of those trips would be outside of Pleasanton or its adjacent cities (Dublin and Livermore). A portion of this traffic would be expected to be cut-through traffic.