A storm drain, storm sewer, surface water drain/sewer, or stormwater drain is infrastructure designed to drain excess rain and ground water from impervious surfaces such as paved streets, car parks, parking lots, footpaths, sidewalks, and roofs. Storm drains vary in design from small residential dry wells to large municipal systems.
Storm drain grate on a street in Warsaw, Poland
Storm drain with its pipe visible beneath it due to construction work
American-style curbside storm drain receiving urban runoff
Full view of a storm drain (Ontario, Canada)
A road is a thoroughfare for the conveyance of traffic that mostly has an improved surface for use by vehicles and pedestrians. Unlike streets, whose primary function is to serve as public spaces, the main function of roads is transportation.
Bundesautobahn 73 and its slip road leading to Erlangen
The Porta Rosa, a Greek street dating from the 3rd to 4th century BC in Velia, with a paved surface and gutters
A paved Roman road in Pompeii
Part of the AVUS road in Berlin, the first automobile-only road, which served as an inspiration for Piero Puricelli's 1924 autostrada between Milan and the northern Italian lakes, the first motorway in the world.
