Methods vehicle lane curvature and signal detection system

A vehicle speed information measuring apparatus of the present invention provides a vehicle body using a signal detection method of lane curvature and a system utilizing the speed sensor, the steering direction detection angle meter or the like, the steering angle signal and the traveling direction of the vehicle body , estimate the current curve curvature of the vehicle, and by the curvature of the curve radio transmission device transmits the message back side of the vehicle, and the curvature of the curve of the lane curvature may modify the model to increase accuracy of estimation.