The invention, dubbed the Common Courtesy, functions as an illuminated sign mounted inside the rear window of a vehicle. By offering a direct way to signal appreciation to drivers who yield or allow for a merge, the system seeks to minimize tension and prevent the misunderstandings that often escalate into road rage. Its creator emphasizes that the design is intended for wide accessibility, making it a practical addition for commercial fleets, rideshare operators, and everyday commuters.

Currently, the concept is being handled by the national sales office of InventHelp, which is seeking licensing agreements or manufacturing partnerships to bring the sign to the automotive market. The design prioritizes ease of installation, aiming to integrate into existing vehicle setups without requiring significant modifications.