GPS, watch out. Here comes China's system

COVID-19 may have left roads around the globe barren of cars, but it hasn't stopped China from claiming leadership over the world of navigation and digital mapping. Watch out, GPS.

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Traffic congestion

Traffic congestion is a condition on networks that occurs as use increases, and is characterized by slower speeds, longer trip times, and increased queueing. The most common example is the physical use of roads by vehicles. When traffic demand is great enough that the interaction between vehicles slows the speed of the traffic stream, congestion is incurred. As demand approaches the capacity of a road (or of the intersections along the road), extreme traffic congestion sets in. When vehicles are fully stopped for periods of time, this is colloquially known as a traffic jam.

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