With respect to an asset tracking device for determining whether a transport by a predetermined type of transportation has started, the asset tracking device includes an acceleration sensor configured to measure an acceleration experienced by the asset tracking device, a controller configured to analyze data measured by the acceleration sensor, and a transmitter. The controller is configured to determine from the data measured by the acceleration sensor whether the asset tracking device is transported by a predetermined type of transportation. The controller is configured to cause the transmitter to transmit a signal that a transport of the asset tracking device with the predetermined type of transportation has started, when the controller has determined from the data measured by the acceleration sensor that the asset tracking device is transported by the predetermined type of transportation.