Safety & Use

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Signal Speak™ tail-light overlays are non-electronic, surface-applied designs that use your vehicle’s existing tail-light illumination to display expressive symbols.
They do not connect to, modify, or interfere with your vehicle’s lighting system.
 

What Signal Speak™ Does Not Do
Signal Speak™ overlays:
• Do not add electronics or wiring
• Do not emit independent light
• Do not replace brake, turn, or hazard lights
• Do not alter required vehicle lighting functions
The overlay is visible only when the vehicle’s original light is illuminated.
 

Intended Use
Signal Speak™ products are designed for expressive and decorative communication.
They are intended to coexist with factory-installed vehicle lighting and should not be used to obscure, disable, or replace any required lighting or signaling functions.
 

Installation Responsibility
Users are responsible for installing overlays in a manner that does not interfere with visibility or required lighting functions.
Before use, ensure the overlay is positioned cleanly on the tail-light surface and does not obstruct the vehicle’s original light output.
 

Designed With Care
Signal Speak™ was created to encourage calm, courteous, and human-centered communication on the road — without distraction, electronics, or permanent modification.