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[The Red Baron]

Quote: Originally Posted by CFCZeek (original)

It bases average speeds on YOUR average speed on that type of road...:-)

Jax is a bit of a mathematical genius in this department !

She advises that they collect the data from the sat navs these days to enable them to evaluate the average speed for the type of road. This is applied to all their data, not the individuals driving style.

This data is then used to calculate a time for each section of road, based on the speed and the distance between any two given points.

Example If traveling along a straight road with two turnings off it, the sat nav will allocate a time to travel between each of the junctions (not the road as a whole). This is how it recalculates when you make a wrong turn.

So if you have a road wih a turning at half a mile and your turning at one mile (if you apply 60mph) it would asign a 30 second time for the first section and then a further 30 seconds for the next section.