Road

Infrastructure
Grand Coulee Dam
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Concepts Asset management Appropriation Lindahl tax Build–operate–transfer Design–bid–build Design–build Earmark European green infrastructure Fixed cost Engineering contracts Externality Government debt Green infrastructure Life-cycle assessment Maintenance Monopoly Property tax Public–private partnership Public capital Public finance Public good Public sector Renovation Replacement (upgrade) Spillover Supply chain Tax
Issues and ideas Air traffic control Brownfield Carbon footprint Containerization Congestion pricing Environmental tax Ethanol fuel Fuel tax Groundwater High-speed rail Hybrid vehicles Land-use planning Mobile data terminal Pork barrel Rapid bus transit Recycling Renewables Reverse osmosis Smart grid Smart growth Stormwater Urban sprawl Traffic congestion Transit-oriented development Fuel efficiency Waste-to-energy Weatherization Wireless technology
Fields of study Architecture Chemical engineering Civil Electrical Mechanical engineering Public economics Public policy Urban planning
Examples Akashi Kaikyo Bridge Trans-Alaska pipeline Autobahn Bicycle parking station Brazilian energy independence Brooklyn Bridge Channel Tunnel Chicago wastewater China's high-speed rail Curtiba rapid bus transit Cycling infrastructure (history, safety) Danish wind-power British offshore wind-power Nuclear power in France Solar power in Germany Hoover Dam Hong Kong Int'l Airport Intercity Express Interstate highways Jamnagar Refinery Kansai Int'l Airport Levee Offshore wind port Panama Canal Port of Shanghai San Francisco–Oakland Bay Bridge Three Gorges Dam Shinkansen Spanish high-speed rail French TGV rail Spanish autovias and autopistas Transcontinental Railroad Power transmission in the USA Wind farm
Category Engineering portal

A road is a thoroughfare used primarily for movement of traffic. Most modern roads are paved.

The words "road" and "street" are commonly considered to be interchangeable, but the distinction is important in urban design. Roads differ from streets, whose primary use is local access. They also differ from stroads, which combine the features of streets and roads.

There are many types of roads, including parkways, avenues, controlled-access highways (freeways, motorways, and expressways), tollways, interstates, highways, and local roads.

The primary features of roads include lanes, sidewalks (pavement), roadways (carriageways), medians, shoulders, verges, bike paths (cycle paths), and shared-use paths.