Patent ID: 6943677

Claim:
A brake light comprising: at least two lamps operative as conventional brake lights, wherein a light signal intensity of said lamps is held constant concurrent with braking; a lamp operative as a signal enhancing brake light wherein a light signal intensity of said lamp is modulated for a predetermined first time interval concurrent with braking, and wherein said light signal intensity is held constant following said first time interval; and a brake light controller operative to modulate light signal intensity of said signal enhancing brake light, comprising: a voltage sensor operative to sense a voltage between a brake actuator switch line and electric ground wherein said voltage signals the state of the brakes as either applied or unapplied; a modulation interval timer operative to signal a first predetermined time interval wherein said light signal intensity is modulated for said first predetermined time interval; a lockout timer operative to signal a second predetermined time interval wherein modulation of said light signal intensity is prohibited for said second predetermined time interval for avoiding repetitive light signal modulation in stop and go traffic; a pulse width modulator operative to drive a control element, whereby said pulse width modulator sends a control signal to said control element; and a control element operative to control an amount of current flow through a light source, said amount of current flow controlling the intensity of the light source.