InventHelp Inventor Develops New Courtesy Sign for Vehicles (CBA-4008)

PITTSBURGH, Aug. 10, 2026 /PRNewswire/ -- "I wanted to create a new courtesy sign for vehicles that enables you to thank another driver for yielding or allowing you to merge," said an inventor, from Macon, Ga., "so I invented the COMMON COURTESY. My design would offer a more visible and...