Systems and Methods for Crash Determination

A method for determining when a vehicle has been involved in a crash, comprising:

• obtaining sensor data from at least one sensor installed in the vehicle by using a vehicle telematics device, where the at least one sensor includes an accelerometer, and where the vehicle telematics device comprises a processor and a memory storing vehicle identification data indicative of a class of the vehicle;
• performing a first stage analysis comprising calculating peak resultant data based on the sensor data using the vehicle telematics device, where the peak resultant data describes an acceleration of the vehicle over a first time period;
• generating crash score data based on the peak resultant data and a set of crash curve data for the vehicle by using the vehicle telematics device, where the crash score data describes the likelihood that the vehicle was involved in a crash based on the class of the vehicle and the sensor data;
• determining if the crash score data exceeds a first threshold;
• performing a second stage analysis comprising calculating resultant change data based on the sensor data in response to determining that the crash score data exceeds the first threshold, wherein the resultant change data describes a resultant change in velocity for the vehicle;
• and
• providing the sensor data to a remote server system using the vehicle telematics device when the crash score data exceeds the first threshold and the resultant change data exceeds a second threshold.