| http://www.w3.org/ns/prov#value | - Given the typical speeds of vehicles in the road network and the levels of accuracy typically required for traffic delay or congestion reports, there is no particular advantage in making the road length units used in the method of the invention too small, and in general a suitable maximum length would be in the range from 200 m to 2000 m, preferably from 300 m to 1000 m, for example about 500 m, f
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