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In 1978 the cost of converting road signs from miles to kilometres in the United Kingdom was estimated to be between £7.5 million and £8.5 million. [88] In 2005 The Department for Transport (DfT) costed the replacement of all of the United Kingdom's road signs in a short period of time at between £565 million and £644 million. [89]
The Mississippi River has the world's fourth-largest drainage basin ("watershed" or "catchment"). The basin covers more than 1,245,000 square miles (3,220,000 km 2 ), including all or parts of 32 U.S. states and two Canadian provinces. The drainage basin empties into the Gulf of Mexico, part of the Atlantic Ocean.
The United Kingdom is a sovereign state located off the north-western coast of continental Europe.With a total area of approximately 244,376 square kilometres (94,354 sq mi), [a] [1] the UK occupies the major part of the British Isles archipelago and includes the island of Great Britain, the north-eastern one-sixth of the island of Ireland and many smaller surrounding islands. [3]
By comparison, the summit of Mount Everest is at 8,848 m (29,029 ft); commercial airliners typically cruise between 10 and 13 km (33,000 and 43,000 ft) where the lower density and temperature of the air improve fuel economy; weather balloons reach 30.4 km (100,000 ft) and above; and the highest X-15 flight in 1963 reached 108.0 km (354,300 ft).
The national speed limit is 70 mph (113 km/h) on motorways, 70 mph (113 km/h) on dual carriageways, 60 mph (97 km/h) on single carriageways and generally 30 mph (48 km/h) (20 mph (32 km/h) in Wales) in areas with street lighting ( Built-up area ). These limits may be changed by road signs and apply to cars, motorcycles, car-derived vans up to 2 ...
Fuel economy in aircraft. Between 1950 and 2018, efficiency per passenger grew from 0.4 to 8.2 RPK per kg of CO₂. [ 1] The fuel economy in aircraft is the measure of the transport energy efficiency of aircraft . Fuel efficiency is increased with better aerodynamics and by reducing weight, and with improved engine brake-specific fuel ...
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The new extreme poverty line of $2.15 per person per day, which replaces the $1.90 poverty line, is based on 2017 PPPs. [7] This means that anyone living on less than $2.15 a day is considered to be living in extreme poverty. About 648 million people globally were in this situation in 2019. [7]