If you or someone you love is in need of emergency assistance, you want help to get there right away. In California, the law is very clear. When you see emergency lights from a patrol car, ambulance or fire truck; safely pull to the right and come to a complete stop.
Failure to yield to emergency vehicles using siren and red lights will cost you a $498 fine. Following within 300 feet of emergency vehicles is also illegal. The fine for that offense is $238.
Don't panic. Never stop in an intersection. Pay attention as emergency vehicles also use loud speakers to speak to drivers blocking their path. You must obey any traffic direction, order, or signal given by a peace officer or firefighter during an emergency.
California DMV Manual Page 74 http://bit.ly/38FZuPO.