If you are a driver, then you know well that the speedometer does not actually show the real speed of our car. At least that’s what our parents, sisters, cousins, friends have always told us… and now the GPS systems have confirmed it for us.
When we drive a car at 120 km/h, we see Google Maps telling us that we are driving at 112 km/h. Who do we stay with? With Speed Maps, because it is the most accurate, since it calculates the speed at which we are moving with the help of GPS.
Does this mean that the speedometer is lying to us? Yes, but consciously, it’s not a mistake. This is due to international rules that state that the speedometer can never show a lower speed, but must always be higher. This avoids fines and accidents.
The discrepancy between actual speed and marker speed has been increased specifically for driver safety and is closely related to speed cameras. This difference in speed helps you not to go faster than you should.
Thus, if we drive all the time at 120 km/h and without thinking go over 5 km/h when we simply cross the road in front of the radar, this should not penalize us, because even with such an increase in speed we will not exceed the limit.
In the European Union, the law states that the indicated speed must never be less than the real one, with a maximum error of 10%. In other countries, such as the US and Japan, the law is more severe, as the deviation is only 4%.
In practice, this means that if our car is traveling at 70 km/h, we are actually traveling at a speed of 60 to 70, but never below 60 km/h. Hence, when we drive below 130 km/h, it is common that 120 km radars do not jump.
Source: Computer Hoy
