Route recalculate

[Chris Krix]

On a recent trip to Cornwall the Nav system came up with 5/6 recalculate route messages. Anyone any idea how the system gets the information?

[NemesisUK]

Either over the radio TMS or, if your phone is tethered, from the internet.

TMS is always active but relies on lorry (mainly) movements.

I've found both systems quite accurate at avoiding hold-ups 

[Chris Krix]

Thanks for your reply. Not long after sending the question I had a relevant experience. On the A30 requiring go to Truro the sat Nav said take the A39 but Google maps directed us off at an earlier B road which avoided the roadworks on the A39. Later we found there were 15mins delay on the A39.

My conclusion - about time Lexus adopted Google maps as their Nav system, as we have used with hire cars in North America.