1. An adaptive motion sensor system on a transport vehicle, comprising: a vibration sensor that detects first non-zero vibrations from an engine in the transport vehicle during a first operating state when said engine is on and the transport vehicle is not moving, and detects second non-zero vibrations from said engine during a second operating state when said engine is on and the transport vehicle is moving; an adaptive threshold component that receives input values based on readings of said vibration sensor, said adaptive threshold component identifying a threshold value such that an input, value on a first side of said threshold value is indicative of said first operating state, and an input value on a second side of said threshold value is indicative of said second operating state; and a motion detection component that receives input values based on readings of said vibration sensor, said motion detection component distinguishing between said first and second operating state through an analysis of said received input values relative to said identified threshold value.