Total posts : 45366
The law says a certain speed limit and YES it’s up to the driver to operate accordingly BUT…..the operator of the car has an instrument(speedometer) to be compliant…..THAT IS MANDATED BY THE GOVERNMENT! All cars HAVE to have a speedometer.
Its not left to the driver to play guessing games and it shouldn’t be left to the transmitter owner either.
Carl….the document for the FCC looks good…..if I could help I would but since I don’t live in the USA I couldn’t be much help.