A method applied to a pedestrian user terminal for road safety includes detecting whether a display device of the user terminal is in an active mode when predetermined signals are received by the user terminal. A prompt can be transmitted when the display device is in the active mode thus providing a warning to the pedestrian user to cross the road, on the display device he or she is viewing. The display device is deactivated when the display device is determined to be still in the active mode after a predetermined time period that starts from the prompt is transmitted.