NHPP[5] funding is not sub-allocated to SANDAG but is programmed for investment in the region by Caltrans with SANDAG’s input. It can be dedicated to freeways and roads on the National Highway System, which includes interstates, state highways, and a large network of arterials and major roads that are critical for regional mobility. It can also be invested in transit capital projects provided they are adjacent to freeways or interstates, reduce congestion on them, and are more cost-effective than direct investments on those highways.