Abstract: A brake light assembly in the form of a rectangularly shaped housing is adapted to be mounted on the inside surface of the front windshield of an automobile or similar vehicle. The assembly includes a reflective lens facing forward, a series of lamps configured in a column and mounted within the housing behind the lens, a power cord for attachment to the vehicle's conventional brake light circuit, and a pair of suction cups for affixing the assembly to the inside surface of the vehicle windshield. In an alternative arrangement, a flexible rim is provided on the anterior of the housing for blocking light leaks which might interfere with the driver's normal vision, and which furthermore, includes an activatable adhesive for affixing the housing rim to the inside surface of the windshield.