In some places in Sweden there are cables that cross car roads. They are often quite large and black but not big enough to be noticed when cars drive over them.
These actually play a fairly important function, although few notice them.
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Seen cables on the car road? It are they to
The cables are called pneumatic pipes or hoses and are used to conduct air under pressure to different components in a system. Through the air pressure in the cables, traffic on a certain road can be monitored.
The cables detect the weight of the car and also measure speed. In this way, the cables can provide accurate information about how many vehicles pass, whether there are passenger cars or heavy trucks and how fast they drive, something like Danish Nyheder24 Be the first to report.
The data is then used to improve or create new traffic solutions.
These cables are found on most European roads and, for example, in France, 200 meters are placed annually on different roads, where they collect data for up to seven days.
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