A method for controlling a vehicle to emanate an audible alert. The method includes determining when the vehicle is operating, and controlling a speaker system in the vehicle to emanate the audible alert outside of the vehicle for a period of time when the vehicle is operating. The audible alert has a sound profile that includes a simultaneous emanation of a first audible frequency component at a first sound pressure level and a second audible frequency component at a second sound pressure level, with the first and second sound pressure levels being greater than a sound pressure level of the sound profile at all other frequencies. The method further includes modulating the first sound pressure level of the first audible frequency component.