The main purpose of this legislation, known as the "No TAP Act of 2026," is to change how federal funding is allocated for transportation projects by eliminating a specific funding set-aside for transportation alternative programs. These programs typically include initiatives like bike paths, pedestrian walkways, and other non-motorized transportation options. Key provisions of the act include the removal of a section of the law that previously required a certain percentage of federal transportation funds to be set aside for these alternative programs.