On 02/13/2016 01:13 PM, Mr Macaw wrote:

I drive at a speed sensible for the roads, I don't need to know the
numerical value.

We have a number of roads where 45 was considered sensible for years.
Then one day the county put up shiny new 35 mph signs. Can you make the
distinction between 35 and 40? If not, the county deputies are standing
by to help you.

I suppose you don't scan your mirrors either?