(09-06-2015, 09:33 AM)Douglas Bay Wrote: Serious question. How do you know it is that accurate. How do you know it is more accurate than the equipment on the bikes. The simple fact is you do not know.

It is impossible for any two instruments to read exactly the same, and to be calibrated the same. Impossible.

There must be a ± tolerance. Maybe there is an agreed tolerance, but if not it makes a total farce of the whole procedure.

It doesn't matter whether it's accurate. It is the reference for the pit lane speed limit. The limit is 60kph as shown by the pit lane speed radar. That's why the teams get the opportunity to calibrate their own speed limiters against it during practice.

It matters that it's precise, but that's a different thing.