for the construction, planning, and design of infrastructure-related projects and systems that will provide safe routes for nondrivers, including children, older adults, and individuals with disabilities to access daily needs. (4) A project for the conversion and use of abandoned railroad corridors for trails for pedestrians, bicyclists, or other nonmotorized transportation users. (5) A project for the construction of turnouts, overlooks, and viewing areas. 205. Activities eligible for assistance Amounts from a loan made or guaranteed under section 208 provided for an eligible project may be used for costs of carrying out such project, including costs of— (1) development-phase activities, including planning, feasibility analysis, revenue forecasting, environmental review, permitting, preliminary engineering and design work, and other preconstruction activities