Infrastructure consists of the fixed installations necessary for transport , and may be roads , railways , airways , waterways , canals and pipelines , and terminals such as airports , railway stations , bus stations , warehouses , trucking terminals , refueling depots -LRB- including fueling docks and fuel stations -RRB- , and seaports .

Infrastructure also includes airports , railway stations , bus stations and seaports -LRB- docks -RRB- .
