UK Speed Limits

[Roy124]

Navigon, in version MN5.1 have enabled the display of speed limts as you drive - not speed cams. First the good news.

It is very accurate and is a good reminder of the speed limit when there may be no visual clues - 30 mph and no street lights or 40 mph and no repeater signs.

Now the bad news:

On a 60 mph single carriageway road it correctly showed 60 but as soon as I reached a road junction with central reservation it read 70. Then it is not up to date or comprehensive.

On one unclass road I drive on a 40 zone in a village is shown but not the 30 zone at a school 400 yards further on. Same road, next village, it shows 40 whereas the limit was dropped to 30 and moved further out.

Same road, same village, the 30 sign on the other side of the main road is correct but it never reverts to 60 out of the village.

At the moment its inconsistency and inaccuracy mean it is both useless and unlikely to seduce. Later, if it improves, people may start to use it more and maybe led astray.

Navigon say they get the data from Navteq who get it from the DfT. DfT say they do noy provide the information to Navteq and Navteq deny they pass it to Navigon.

Where does it come from and would Navigon be liable in law for purveying incorrect and out of date data? Should the information be provided officially and updated on a monthly cycle much as jeppson do for avaiation data?

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