Definition of item:
This subcategory includes all engineering services (including provision of designs, plans, and studies) related to: - highways, roads and streets, including elevated highways used for motor vehicle traffic - bridges and tunnels - ancillary road transport facilities such as rest stops, weigh stations, toll booths - mass transit systems, such as light rail or subway systems - railways and related structures - railway bridges and tunnels - marine and inland ports - harbours, locks, canals, and dams primarily used for transportation purposes - airports, runways, hangars - other aviation facilities - space transportation projects - oil and gas transportation projects - other transportation projects n.e.c.
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