Can anybody find the part of the text of the legislation that requires transmission?
Skimming the table of contents and looking through SEC. 31406. VEHICLE EVENT DATA RECORDERS I couldn't find it. I could only find requirements to record data, not transmit it.
It doesn't require transmission ("(4) may require an interoperable data access port to facilitate universal accessibility and analysis.", as you saw) --- but note that if you're worried that the government might try to slip medium-range RF into the recorder standard, there's a Rulemaking procedure yet to come that could mandate wireless access to the boxes.
Which doesn't mean "start hyperventilating", of course.
http://news.ycombinator.com/item?id=3863555
The submitted article is just passing on the content of an Infowars post
http://www.infowars.com/mandatory-big-brother-black-boxes-in...
but the true primary source for this story is one of the United States federal government sources, for example
http://www.govtrack.us/congress/bills/112/s1813/text
with the text of the legislation.