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First Street Multimodal Boulevard Study <br /> February 17, 2026 <br /> Page 9 <br /> Option 3: Bus Lanes and Bikeway Concept <br /> • Four general-purpose lanes plus dedicated transit-only bus lanes; <br /> • Protected bicycle facilities on both sides; <br /> • Significant transit performance benefits; <br /> • Greatest potential mode shift but highest traffic operational tradeoffs. <br /> Conceptuai v+ew <br /> o p <br /> 4 <br /> O � <br /> r <br /> T T �E <br /> 12' 76' 12' <br /> Roadway <br /> 100'Fist St Right-of-wry <br /> r <br /> 4P }5 <br /> 4 <br /> CP <br /> LA <br /> ' c7 <br /> 1 <br /> i <br /> Concepts East of Zoo Lane <br /> For the eastern segment (1-5 to Tustin Avenue), a consistent four-lane configuration to <br /> match the existing cross-section of First Street within City of Tustin limits with expanded <br /> pedestrian and bicycle zones is proposed across all alternatives, building on a planned <br />