Abstract: The invention describes a method implemented on a mobile phone that will disable a cellular phone to prevent an incoming and outgoing or re-route an incoming cellular phone call/text/video/messages and the like if the cellular phone is known to be moving at a predetermined speed corresponding to an unsafe operation of a vehicle. The system and method will determine if the cellular phone is travelling at the predetermined speed and if so will alert the user, then perform any one or all of, a set of predetermined actions such as shutdown the phone, re-route all call to voice messages, store all text messages, shutdown the display, prevent outbound calling/texting, and the like. The invention prevents an individual from using their cellular phone while operating a moving vehicle at or above a predetermined speed.