At one time, if you wanted safety systems such as anti lock brakes and electronic stability control, you had to buy a premium automobile like Audi, Lexus, or Mercedes. Today, these systems are standard on almost all vehicles. As premium car manufacturers add even more advanced safety systems to their vehicles, they become more affordable and make their way down to mainstream brands. An example of this is Ford offering a lane departure warning system on its mainstream redesigned 2013 Ford Fusion and its 2013 Ford Explorer SUV. The system will alert the driver through steering wheel vibrations and messages on the control display, and will become more insistent if the driver does not make the proper corrections. Ford will be offering the system as an option, but it is expected to become a part of a trim line package on its upper-tier SE or Titanium lines.