# SafetyKit Detect and respond to car crash events in your app. ## Overview SafetyKit provides Crash Detection, a feature that sends a crash event to an authorized app if a person is in a severe vehicular crash as detected by their iPhone 14, iPhone 14 Pro, Apple Watch Series 8, Apple Watch SE (2nd generation), or Apple Watch Ultra. These devices provide a feature called Emergency SOS - Call After Severe Crash. If enabled, Emergency SOS dials a municipal emergency service such as 911 in the event of a vehicular crash. After Emergency SOS places its call, Crash Detection can assist someone by initiating a call to a contact designated by the app, such as a roadside assistance provider. SafetyKit supports three crash scenarios. In each scenario, Apple is the first party, and your app is the third party. The first scenario has first-party Emergency SOS turned off and third-party sharing turned on. When the device detects a crash, a critical alert occurs and the third party receives the crash information.  In the second scenario, first-party Emergency SOS and third-party sharing are turned on. When the device detects a crash, the first-party Emergency SOS runs automatically. After the first party completes its procedures, a critical alert occurs and the third party receives the crash information.  In the third scenario, first-party Emergency SOS is turned on and there’s no third-party sharing. When the device detects a crash, the first-party Emergency SOS runs automatically.  > Important: > Crash Detection requires the entitlement. To apply for this entitlement, see [Request Access to the Vehicular Crash Event Entitlement](https://developer.apple.com/contact/request/vehicular-crash-events/). To support Crash Detection, use [`SACrashDetectionManager`](/documentation/SafetyKit/SACrashDetectionManager) to determine whether it’s available and if so, ask permission to allow your app to receive crash events. Then set [`delegate`](/documentation/SafetyKit/SACrashDetectionManager/delegate) to the object that receives the events. Only one app on the device can receive Crash Detection events. If your app receives a Crash Detection event, use [`SAEmergencyResponseManager`](/documentation/SafetyKit/SAEmergencyResponseManager) to provide assistance. ## Topics ### Detecting a crash [`SACrashDetectionManager`](/documentation/SafetyKit/SACrashDetectionManager) Provides registration and management of Crash Detection events. [`SAAuthorizationStatus`](/documentation/SafetyKit/SAAuthorizationStatus) An enumeration that represents the current Crash Detection event authorization state. [`SACrashDetectionEvent`](/documentation/SafetyKit/SACrashDetectionEvent) Describes the information about a vehicular crash. [`SACrashDetectionDelegate`](/documentation/SafetyKit/SACrashDetectionDelegate) The protocol that an object adopts to receive Crash Detection events and changes to the authorization status. ### Responding to a crash [`SAEmergencyResponseManager`](/documentation/SafetyKit/SAEmergencyResponseManager) Provides actions in response to a Crash Detection event. [`SAEmergencyResponseDelegate`](/documentation/SafetyKit/SAEmergencyResponseDelegate) The interface for receiving updates about a requested emergency response action. [`SACrashDetectionEvent.Response`](/documentation/SafetyKit/SACrashDetectionEvent/Response-swift.enum) An enumeration that defines possible emergency responses to a Crash Detection event. ### Handling errors [`SAErrorDomain`](/documentation/SafetyKit/SAErrorDomain) The domain for error objects that SafetyKit produces. [`SAError.Code`](/documentation/SafetyKit/SAError/Code) Codes for identifying errors in SafetyKit. [`SAError`](/documentation/SafetyKit/SAError) An error reported by SafetyKit. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)