1. A method for detecting a vehicular accident with a mobile computing device, the method comprising: extracting a vehicle motion characteristic from at least one of a first location dataset and a first motion dataset collected at the mobile computing device during a first time period, wherein the vehicle motion characteristic describes movement of a vehicle; detecting satisfaction of a motion characteristic condition based on the vehicle motion characteristic; after detecting satisfaction of the motion characteristic condition: retrieving an accident detection model, receiving at least one of a second location dataset and a second motion dataset collected at the mobile computing device, and receiving a first traffic dataset describing traffic conditions proximal a vehicle location extracted from the at least one of the second location dataset and the second motion dataset, wherein the traffic conditions comprise at least one of: a traffic level, a traffic law, and accident data, and wherein the first traffic dataset and the at least one of the second location dataset and the second motion dataset are collected during a second time period after the first time period; detecting a vehicular accident event with the accident detection model, the first traffic dataset, and the at least one of the second location dataset and the second motion dataset; and in response to detecting the vehicular accident event, facilitating an accident response action associated with the mobile computing device.