# TripLocation Represents the user's location during an ongoing Trip. See [startReceivingUpdates(with:\_:)](/important-topics/sdk/api-reference/ios/triplocations.md#startreceivingupdates-with). ## TripLocation API ### `altitude` Altitude above mean sea level, in meters. `nil` if altitude is not available. ```swift let altitude: CLLocationDistance? ``` ### `course` Course, in degrees relative to true north. `0` indicates north and values increase clockwise. Course values may not be available on all devices. `nil` if not available. ```swift let course: CLLocationDirection? ``` ### `courseAccuracy` Course accuracy, in degrees. The radius of uncertainty for [course](#course). When available (iOS 13.4+), this represents a 68% confidence interval for the reported course. `nil` if not provided by the location. ```swift let courseAccuracy: CLLocationDirectionAccuracy? ``` ### `horizontalAccuracy` Horizontal accuracy radius, in meters. `nil` if not available. ```swift let horizontalAccuracy: CLLocationAccuracy? ``` ### `latitude` Latitude in decimal degrees. ```swift let latitude: CLLocationDegrees ``` ### `longitude` Longitude in decimal degrees. ```swift let longitude: CLLocationDegrees ``` ### `speed` Speed, in meters per second. `nil` if not available. ```swift let speed: CLLocationSpeed? ``` ### `speedAccuracy` Speed accuracy, in meters per second. The radius of uncertainty for [speed](#speed). `nil` if the source does not provide a speed accuracy. ```swift let speedAccuracy: CLLocationSpeedAccuracy? ``` ### `timestamp` The timestamp at which the location fix was determined. ```swift let timestamp: Date ``` ### `transportMode` The most probable transport mode at the time of this location. See [SENTTimelineTransportMode](/important-topics/sdk/api-reference/ios/event-timeline/senttimelinetransportmode.md). ```swift let transportMode: SENTTimelineTransportMode ``` ### `verticalAccuracy` Vertical accuracy, in meters. `nil` if not available. ```swift let verticalAccuracy: CLLocationAccuracy? ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.sentiance.com/important-topics/sdk/api-reference/ios/triplocation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.