Transport infrastructure - vehicles, road, rail, cable and financing of transport Aviation infrastructure - air traffic control technology in aviation Rail transport - trackage, signals, electrification of rails Road transport - roads, bridges, tunnels Critical infrastructure - assets required to sustain human life Energy infrastructure - transmission and storage of fossil fuels and renewable sources Hazardous waste - characteristics, disposal, handling of hazardous waste Information and communication infrastructure - systems of information storage and distribution Public capital - government-owned assets Public works - municipal infrastructure, maintenance functions and agencies Solid waste - generation, collection, management of trash/garbage Sustainable urban infrastructure - technology, architecture, policy for sustainable living Water infrastructure - the distribution and maintenance of water supply Wastewater infrastructure - disposal and treatment of wastewater