A computer assisted early warning and emergency braking system for a vehicle is disclosed in which a computer system responds to abnormal tire and/or road sensor data by generating a signal which activates the horn, thereby alerting the driver that the vehicle is in an unsafe condition. The computer may commence rapid braking in order to avoid a dangerous situation if appropriate driver corrections do not occur in a timely fashion. Therefore, the present invention provides an increased margin of safety, particularly when the vehicle is travelling at higher speeds. The present invention can also alert others when a driver is not responding with appropriate corrective action, such as might be the case during sickness, slumping over the wheel due to a heart attack, being asleep at the wheel, etc. In the case of a false alarm, the driver can inactivate the system by manual activation of the vehicle horn. In the case of a non-responsive driver, the option for the activation of an emergency locator system can be included.