A lighting system for use with an emergency vehicle comprises at least one elongated lighting bar mounted to an exterior surface of the emergency vehicle, the lighting bar comprises a plurality of lighting elements operable to emit light, the at least one lighting bar operable to be placed in a first substantially horizontal lowered position and a second substantially vertical raised position, and a controller electrically coupled to the at least one lighting bar and configured to receive user input and controllably place the at least one lighting bar in one of a raised and lowered positions in response to the user input, the controller further configurable to operate the plurality of lighting elements in a predetermined repeating on/off sequence involving increasing number of lit lighting elements and increasing light intensity over time.