Electronic surveillance cameras These are devices whose main function is to measure speed of vehicles for ensure that traffic rules are followed. Yes OK must be marked with warning signs which are usually called “radar monitoring” or “speed monitoring”, There is another alternative to detect them that is applicable in most cases.
In Argentina There are traffic sensors that perform various functions such as counting vehicles, weigh trucks or yourself complex violations because of excessive speed. One type of these sensors are the “spirals”, which are nothing other than Coiling cables under the sidewalk in the shape of a square.
“To count vehicles, a single loop in the pavement is typically used; To record the speed of vehicles, two are needed: Because depending on the time a vehicle needs between entering one loop and the other, the The system can calculate the speed of vehicles“, commented Martín Viale, Professor of Intelligent Transport Systems at the Faculty of Engineering at the University of Buenos Aires (UBA).
This pair of coils, that speed radars normally use, It can also function as a vehicle count at the same time, although the single loop cannot detect speeds.
This way, If “two squares on the sidewalk” are detected, it means there is a camera monitoring speed. In fact, the specialist highlighted this The vast majority of radars in Argentina have this loop method. as it is one of the few approved.
Despite it, It is also present in the ecosystem the speed measurement some radar devices called Doppler, which measure the kilometers per hour at which a given vehicle travels through waves. This They usually occur with mobile or rotating speed controls.
This is important to note It is extremely important to always adhere to the speed limit And? Electronic surveillance cameras play a relevant role, According to civil engineer and urban planner Juan Del Valle, they help reduce accidents by 20 to 37%.
Aside from that, The specialist pointed this out This was shown by a study carried out in the autonomous city of Buenos Aires 57% of the fatal accidents analyzed involved excessive speed.
As already mentioned, The loops are also used to measure traffic and this count, in turn, is used for planning and administration.
“Firstly, in terms of planning, A road/lane has a theoretical capacity that can handle, for example, 800 vehicles per hour. You can use the sensor to see whether capacity is almost reached. “If the number exceeds this capacity, there will be congestion,” Viale commented, adding: “If traffic jams occur, a deterrent solution must be planned the use of private vehicles or the creation of exclusive lanes that, among other things, promote local public transport.”
On the highways, For example, The number of vehicles helps to determine peak times and thus find a solution. “Building another lane wouldn’t solve the congestion on the highways, but Metering can be used to increase fares during peak hours. to encourage the use of the road at unusual times,” he analyzed.
Aside from that, The sensors are used on some motorway exits where traffic jams are common. “So that the line of braked cars does not reach the highway, loops are created on the slopes which, when connected to the traffic lights, ensure that the green light stays longer than programmed to avoid this situation,” he said.
Finally, sensor data can serve as a management perspective Entrance Set traffic light schedules. “There are loops at the entrances and exits of hospitals so that the traffic lights automatically turn green when an ambulance is detected above“, concluded the Intelligent Transport Systems teacher.
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