Exceeding speed limit - Alarm

[hugh]

Hi All
I notice on my Tom Tom 1 that the audible alarm comes in approx. 4 mph above speed limit
example when in a 30 mph area it comes in at 34mph.
Is it possible to reset it to come in at 30 mph

Have a good day
hugh

[eme]

i think its becuse at 30 your car is doing around 27-28 true speed, then allowing for a slight differance as the police do it should work out right. also at 70 your car is doing around 65 and same rules apply. hope i got that right.:confused::respect-050: and no dont think it can be altered as its going of the satallites.

[sparky_dog]

The sat-derived speed displayed on your satnav is pretty accurate, so speedo tolerances aren't relevant here.

I don't believe the warning can be adjusted, only turned off. I would think that the leeway is so that the warning isn't triggered when doing the speed limit - poor reception can make the calculated speed fluctuate a bit, so the warning would be on and off all the time.

[dog-man]

A speedometer is only accurate to + or - 3 miles per hour.




dog-man

[foggy]

A speedometer is only accurate to + or - 3 miles per hour.




dog-man

A speedo is not allowed to under read

[xanadu]

A speedometer is only accurate to + or - 3 miles per hour.




dog-man

Not true...

It can over read usually up to around 10%

But not allowed to under read.

My speedo is same as GPS speed, so less than 1mph error.

[hugh]

Thanks to you all for your input, it's evident that the Tom Tom setting cannot be changed.

Thanks again
hugh