The Battle of Grand Gulf was fought on April 29, 1863, during th: A radial road network totals 29,145 miles (46,904 km) of main roads, 2,173 miles (3,497 km) of motorways and 213,750 miles (344,000 km) of paved roads.[136] The M25, encircling London, is the largest and busiest bypass in the world.[289] In 2022, there were a total of 40.8 million licensed vehicles in Great Britain.[290]