Federal transportation regulations establish safety standards and operational requirements for airports, railways, marine transportation, and interprovincial road transport. These regulations affect municipalities even though cities primarily deal with local transportation. Railway regulations govern crossings, switching operations, and railway company conduct that affect communities. Airport regulations determine flight paths, noise management, and safety zones impacting surrounding areas. Marine regulations affect port cities and waterfront development. Dangerous goods transportation regulations apply to materials moving through communities. Municipalities have limited authority over federally-regulated transportation but experience significant impacts. Municipal advocacy on transportation regulations addresses safety concerns, environmental impacts, and land use conflicts arising from federal transportation facilities and operations.