4-5. Crash data

When a crash is detected by the telematics SDK Damoov platform immediately informs 3rd party platform via notification services. The notification contains overall information about the incident.

Meanwhile, The telematics SDK transfers a high-frequency buffer of crash information.

Buffer frequency:

iOS: 60Hz
Android: 100Hz

Size of the buffer:

5 seconds before the crash and 5 seconds after the crash

Header

{"Id":"b369587a-15ca-4322-95a4-971e88dc48aa",
"Type":"Accident",
"AccidentTrigger":"ACCELERATION_LOW_SPEED_THRESHOLD",
"Reliability":2.497596245457438,
"TimeStart":1632473113173,
"Duration":40996,
"PureDuration":28359.35888671875,
"SpeedStart":0.1039,
"SpeedStop":21.80572194328226,
"SpeedMedian":0.7740738640764255,
"AccelerationLateral":1.0586568693806215,
"AccelerationDirect":0.085728685260066,
"AccelerationVertical":9.019821108595995,
"AccelerationLateralEnd":-0.2214526692969265,
"AccelerationDirectEnd":0.6247857121992172,
"AccelerationVerticalEnd":9.90359047986427,
"PointStart":{"Latitude":60.02471350213658,"Longitude":30.215844040847344},
"PointEnd":{"Latitude":60.02418129538941,"Longitude":30.219847877314415},
"RangeDirect":{"Min":-48.0436,"Max":13.4465,"Median":0.0215,"Quantile_95":2.4294,"Quantile_05":-1.9389},
"RangeVertical":{"Min":-12.9587,"Max":35.6981,"Median":9.8439,"Quantile_95":10.4624,"Quantile_05":8.4513},
"RangeLateral":{"Min":-36.8785,"Max":12.1665,"Median":-0.0078,"Quantile_95":2.7568,"Quantile_05":-0.7967},
"Accuracy":{"Min":3.4062,"Max":3.556,"Median":3.4535,"Quantile_95":3.5052,"Quantile_05":3.4114},
"Speed":{"Min":0,"Max":21.8057,"Median":0.1039,"Quantile_95":20.6837,"Quantile_05":0}}

Header Description

Object	Description
Id	Id of event
Type	Type of event
AccidentTrigger	Reason of trigger
Reliability
TimeStart	Time of event start UTC
Duration	Duration of all event points ms
PureDuration	Duration of event points with acceleration higher then threshold ms
SpeedStart	GPS speed at the beginning of event Comes directly from phone GPS sensor m/s
SpeedStop	GPS speed at the end of event Comes directly from phone GPS sensor m/s
SpeedMedian	Median GPS speed during the event Comes directly from phone GPS sensor m/s
AccelerationLateral	Acceleration at the beginning of event that perpendicular to direction of movement; m/s2
AccelerationDirect	Acceleration at the beginning of event that is aligned with direction of movement; m/s2
AccelerationVertical	Vertical Acceleration at the beginning of event m/s2
AccelerationLateralEnd	Acceleration at the end of event that perpendicular to direction of movement; m/s2
AccelerationDirectEnd	Acceleration at the end of event that is aligned with direction of movement; m/s2
AccelerationVerticalEnd	Vertical Acceleration at the end of event m/s2v
PointStart	Coordinates of event start point
PointEnd	Coordinates of event end point
RangeDirect	Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05
RangeVertical	Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05
RangeLateral	Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05
Accuracy	Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05
Speed	Aggregated metrics during all event window: Min, Max , Median, Quantile_95, Quantile_05

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Crash dataset

Updated 9 days ago