Defining “Emergency” Under California Law: An Analysis of Veh. Code § 21055

Mar 10, 2025

Understanding what constitutes an “emergency” under California’s traffic laws is crucial for determining when an authorized emergency vehicle is afforded certain legal exemptions. Under Vehicle Code § 21055(a), an “emergency” exists if the driver of an authorized emergency vehicle is:

responding to an emergency call; involved in rescue operations; in the immediate pursuit of an actual or suspected violator of the law; responding to, but not returning from, a fire alarm; or operating a fire department vehicle while traveling from one place to another because of an emergency call.


This statutory language provides a clear framework for evaluating whether a driver was acting in response to an emergency at the time of an incident. It is important to note that the determination of an emergency depends not on an objective analysis of events after the fact, but on the nature of the call or situation as it was presented to the driver. In other words, the driver must have had reasonable grounds to believe that an emergency existed, even if the emergency may later be subject to debate.

The landmark case Washington v. City and County of San Francisco (1954) 123 Cal.App.2d 235, 241 [266 P.2d 828] serves as a key reference point in interpreting this statute. In Washington, the court scrutinized the factual context of the incident to determine whether the driver was indeed responding to an emergency as defined by the statute. Similarly, Gallup v. Sparks-Mundo Engineering Co. (1954) 43 Cal.2d 1, 5 [271 P.2d 34] further clarifies that the existence of an emergency is contingent upon the nature of the call received and the situation as perceived by the driver. It is not solely based on whether an emergency exists in fact, but rather on whether the driver had reasonable grounds to believe one was present.

This distinction is critical because it establishes that the exemptions provided to emergency vehicle operators are not absolute; they are predicated on the driver’s reasonable interpretation of the situation. If a driver reasonably believes that an emergency exists, they may be afforded certain legal protections even if, upon later review, the circumstances might not meet an objective standard of emergency. The courts have repeatedly underscored that the “emergency” determination is inherently subjective, relying on the facts as they were understood by the driver at the moment of action.

For practitioners and scholars alike, secondary sources such as Witkin’s Summary of California Law (11th ed. 2017, Torts §§ 358, 394–398) and the Government Tort Liability Practice (Cont.Ed.Bar 4th ed. §§ 11.140–11.144) provide further commentary on the nuances of this statutory provision. These resources emphasize that the analysis of whether a driver was responding to an emergency must consider the reasonable perceptions of the driver, rather than solely the objective outcome of the situation.

In summary, California’s definition of “emergency” under Vehicle Code § 21055 is designed to offer legal protections to emergency vehicle operators who act in response to urgent, time-sensitive situations. By focusing on the driver’s reasonable belief in the existence of an emergency—supported by judicial interpretations in cases such as Washington v. City and County of San Francisco and Gallup v. Sparks-Mundo Engineering Co.—the statute ensures that drivers are not unduly penalized for actions taken under the pressure of emergent circumstances. This approach strikes a balance between public safety and the need to hold drivers accountable, reflecting the complex realities of emergency response on California’s roadways.

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