When we talk about radars, we are talking about control systems of great importance in daily life and which are used in areas as different as weather forecasting, maritime navigation, military use or air traffic.
In this last area it is the one comes his great fame and a touch that we can call the era, which makes us associate it with this titanic resistance that the English had against the Nazis during the Second World War.
Fear of radar
There are many drivers who are afraid of speed cameras, who monitor them and who are there to fine them as soon as they exceed the limit. authorized speed limit. The objective in many cases is to act as collectors of euros on behalf of the General Directorate of Traffic, all thanks to the numerous fines applied in cases of excessive speed.
We can really say that this is not the case, since the fixed and mobile radars placed on highways and highways will have the most important function that drivers can maintain the permitted speed, especially in sections where if we exceed we can run the risk of an accident occurring.
We are talking about a series of devices that will fulfill a preventive function and why not say it on an educational level, since they will show the driver how to drive at safe speeds. These are devices that undoubtedly perform preventive functions.
Let’s think that they will not be activated immediately, which not all drivers know, since they will also leave a small margin to avoid unfair sanctions to the driver, the famous rule of five and seven.
The famous rule
This rule is linked to the margins of error that the speed cameras have and the speed at which they need to jump to be sure that the driver is going faster than what is allowed.
We are talking about a margin which is five kilometers per hour and five percent in the case of fixed radars and which becomes seven in both cases in the case of mobile radars.
We believe that this is a very useful and effective rule and is also used with considerable success in other European Union countries.
A margin which will vary depending on the class of radar
When we talk about the rule of five, it will be applied to fixed speed cameras on the sections where the speed will be less than one hundred and a certain percentage when it exceeds one hundred.
The rule of seven is used in mobile radars for all the reasons we stated previously up to a hundred and some percentage at higher speeds.
The reason for the differences
This difference observed in the margins of error between fixed and mobile radars is largely justified by the variability that will be inherent to mobile detection equipment.
These can be subjected to a series of external conditions This will affect accuracy, in case of changes in distance, detection angle or even vehicle movement.
For all this, a greater margin of error will be established in the case of mobile radars, where it will guarantee greater reliability when detecting violations.
What is recommended in this sense is to stay a little below the authorized speed limit, because it will not always be the speed that the speedometer indicates, i.e. the real one where the car will go. In all cases, it is preferable to take as a reference the speed indicated by the GPS, which can be a little more precise.
Speed cameras inspire respect among drivers and we all see that the areas in which their presence is reported are generally subject to considerable speed reductions, which is why they continue to have a deterrent effect that avoids and reduces deaths and accidents on our roads.
