A road is a thoroughfare for the conveyance of traffic that mostly has an improved surface for use by vehicles (motorized and non-motorized) and pedestrians. Unlike streets, whose primary function is to serve as public spaces, the main function of roads is transportation.
The Millau Viaduct (French: le Viaduc de Millau) is a large cable-stayedroad-bridge that spans the valley of the River Tarn near Millau in southern France. Designed by the structural engineer Michel Virlogeux and British architect Norman Foster, it is the tallest vehicular bridge in the world, with one mast's summit at 343 metres (1,125 ft) — slightly taller than the Eiffel Tower and only 38 m (125 ft) shorter than the Empire State Building. The viaduct is part of the A75-A71 autoroute axis from Paris to Béziers. It was formally dedicated on 14 December 2004, inaugurated the day after and opened to traffic two days later. The bridge won the 2006 IABSE Outstanding Structure Award.
The bridge’s construction broke three world records:
The highest pylons in the world: pylons P2 and P3, 244.96 metres (803 ft 8 in) and 221.05 metres (725 ft 3 in) in height respectively.
The highest mast in the world: the mast atop pylon P2 peaks at 343 metres (1,125 ft).
The highest road bridge deck in the world, 270 m (890 ft) above the Tarn River at its highest point.
Image 2Pateros Traffic Enforcer And Roadworks Road Closed Construction in Pateros, Metro Manila, Philippines. (from Roadworks)
Image 3Different layers of road including asphalt layer. The total thickness of a pavement can be measured using granular base equivalency (from Road surface)
Image 11According to Eurostat and European Railway Agency, in European railway mode of transport, there is a fatality risk for passengers and occupants 28 times lower compared with car usage. Based on data by EU-27 member nations, 2008–2010. (from Road traffic safety)
Image 18John Metcalf, also known as Blind Jack of Knaresborough. Drawn by J R Smith in The Life of John Metcalf published 1801. (from History of road transport)
Image 20The schedule of maximum tolls allowed on the Woodstock to Rollright Turnpike Trust on the Great Road to Worcester in 1751 (from History of road transport)
Image 22The Dutch Reach - Use far hand on handle when opening to avoid dooring cyclists or injuries to exiting drivers and passengers. (from Road traffic safety)
Image 23Pavement ends and turns into gravel surface road (from Road surface)
Image 24Vehicles experiencing a breakdown or an emergency can stop in the emergency lane; these lanes may themselves present risks to traffic. (from Road traffic safety)
Image 32The Great North Road near Highgate on the approach to London before turnpiking. The highway was deeply rutted and spread onto adjoining land. (from History of road transport)
Image 33Closeup of asphalt on a driveway (from Road surface)
Image 36Replacing the old road with cobblestones of cement in Bo'ao Road area, Haikou City, Hainan, China. (from Roadworks)
Image 37Sacrifices to the Modern Moloch, a 1922 cartoon published in The New York Times, criticizing the apparent acceptance by society of increasing automobile-related fatalities (from Road traffic safety)
Image 38Car fatalities per pax-km vs. car usage per pax-day; in Europe. It seems, at least in these European countries, that car fatalities per person-km have no strong correlation with massification of car usage. The average car usage in these countries is around 30km per person-day with varying number of fatalities ratios. These differences might be related with different cultural approaches to traffic codes, or more safety measures implemented on such countries. (from Road traffic safety)
Image 39According to Eurostat, there is almost a linear proportion between the total number of passenger-km driven by car and road fatalities. (from Road traffic safety)
Image 40An example of composite pavement: hot-mix asphalt overlaid onto Portland cement concrete pavement (from Road surface)
Image 41Polymer cement overlaying to change asphalt pavement to brick texture and color to create decorative crosswalk (from Road surface)
...that 250,000 kilometers (150,000 miles) of roads complement air, pipeline, hiking trail, and waterway travel to provide transportation in Saskatchewan?"
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