Lord Popgun_imp said:
As far as I know there is no requirement for that. It could be just easier to do as some bikes go it Canada, etc.
Now I have to go look at my car speedo...
Ok, Google is my friend. Has to be one or the other or both:
Federal Register :: Request Access
Good Link find...thanks! But if I may, a correction:
From the bottom of the section labeled "SUPPLEMENTARY INFORMATION:"
"Therefore, today's technical amendment changes the language of the Speedometer display required by FMVSS 101 to “MPH, or MPH and km/h”. I added bold emphasis.
The above was a response to Ford which had previously:
recommended that “MPH km/h” be changed to “MPH and/or km/h”
GoldOxide_imp said:
For sure in the U.S. mph is the dominant scale, km/h the secondary and/or optional scale. Some states are very strict about this and make bikes [imported] from Canada reverse the speedometer scales, if permanently printed on dial gauges.
In Canada it is the reverse (dominant km/h, secondary mph), but I don't think it is enforced. My Aprilia had mph dominant scale, km/h secondary.
Also keep in mind, there are many counties in the U.S. that post speed limits in km/h. So that may have some other effect on supplying secondary km/h scales.
- - -
Nevertheless, with many modern vehicles using digital and "smart" displays, the issue is becoming largely moot.
Except when it comes to motorcycle manufacturers trying to make a retro looking bike?
; )