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<br />City of Santa Ana | First Street Multimodal Corridor <br />Technical Memorandum <br /> <br />13 <br /> <br />Traffic Operations <br />First Street is currently a six-lane divided roadway with a raised median and dedicated turn <br />pockets at intersections . The road has a capacity of 56,300 vehicles per day at LOS E. The <br />threshold for acceptable level of service (LOS D) is 50,600 vehicles per day. Within the study <br />area there are 16 signalized intersections and several unsignalized intersections . The posted <br />speed limit is 40 miles per hour (mph) despite the presence of several school and senior <br />facilities within the study area. <br />To assess the existing traffic conditions along the corridor, peak hour intersection volumes <br />(vehicles, pedestrians and bicycles) and daily volumes (speed, volume and classification) <br />were collected at locations along the corridor during a typical weekday in March 2025. <br />Daily Volume Analysis <br />Daily traffic volumes were collected at eight spot locations along the corridor. Table 2 below <br />summarizes the volume and the existing level of service based on the City’s level of service <br />thresholds for roadway segments . <br />Table 2. Existing Roadway Segment Level of Service <br />Segment <br />Daily Traffic Volume (vehicles per day) <br />LOS EB WB Total <br />Baker Street to Shelton Street 20,526 18,862 39,388 B <br />Parton Street to Ross Street 21,155 19,046 40,201 C <br />West of Spurgeon Street 20,773 16,490 37,263 B <br />East of Garfield Street 18,417 15,626 34,043 B <br />Standard Avenue to Grand Avenue 18,373 14,924 33,297 A <br />West of Wright Street 18,476 15,598 34,074 B <br />West of Cabrillo Park Drive 14,451 10,603 25,054 A <br />Golden Circle Drive to Tustin Avenue 10,373 8,766 19,139 A <br /> <br />As shown, all of the segments currently operate at LOS C or better. To understand the <br />peaking characteristics along the corridor, the daily volumes at the locations with highest <br />volume (Parton Street to Ross Street) and lowest volume (Golden Circle Drive to Tustin <br />Avenue) were evaluated on an hourly basis . Figure 6 illustrates the volumes over a 24-hour <br />period, which shows at both the highest and lowest volume locations there are similar <br />peaking characteristics , which occur in the AM (7:00 to 9:00AM) and in the PM (3:30 – <br />5:30PM). <br />