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Transitioning to wide angle lights enabled the doubling of distance between streetlights in Flanders from 45 m to 90 m, cutting annual street lighting electricity expenditures to €9 million for the 2,150 km long network that was retrofitted, corresponding to ca. €4,186/km. [89]
A 30 mph speed limit reminder road sign. Used when there is insufficient street lighting for a road to legally have an automatic 30 mph speed limit. In the UK Highway Code for England, Scotland and Northern Ireland, a built-up area is a settled area in which the speed limit of a road is automatically 30 mph (48 km/h). In Wales it's 20 mph (32 ...
The siriometer is an obsolete astronomical measure equal to one million astronomical units, i.e., one million times the average distance between the Sun and Earth. [13] This distance is equal to about 15.8 light-years, 149.6 Pm, or 4.8 parsecs, and is about twice the distance from Earth to the star Sirius. [14]
The Barri Gòtic retains a labyrinthine street plan, with small squares and streets, many of which connect onto the Rambla. One of the larger of these squares is the Plaça Reial, a lively 19th-century square with tall palm trees and street lamps designed by Antoni Gaudí, which opens down a short entrance passage off the Rambla dels Caputxins.
In some areas, a "prepare to stop" sign with two alternately flashing yellow lights is installed in locations where a high-speed road (design speed usually at least 55 mph / 90 km/h) leads up to a traffic light, where the traffic light is obscured from a distance (or both conditions), or before the first traffic signal after a long stretch of ...
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The signs indicate the location of an intersection at an adequate distance for it to be effective, being a minimum of 500 m on highways and highways, and can be reduced to 50 m in towns and repeated several times at another distance. Sometimes they can be seen in different colors to differentiate them.