Hello, I want to ask regarding the accuracy of speed reading. Is it exact the same as actual speed? And what percentage is the level of inaccuracy?
Ex: if the vehicle is at 42kph, does the GPS send the data the exact speed of vehicle or the data will be sent around 40 - 45kph?
The GPS that i'm using right now mostly is MTB100, FMB920, FMB120 and FMB130.