Throughout the Notice of Proposed Rulemaking’s comment period – which just ended last month — the V2V debate has featured a prolonged battle over access to the radio frequencies designated for V2V systems. Automakers are on one side, cable companies and telecommunication technology companies on the other.

A slice of the radio space in question is 75 MHz of spectrum in the 5.9 GHz band, which Federal Communications Commission (FCC) in 1999 set aside exclusively for safety-related connected car applications using Dedicated Short Range Communications (DSRC) wireless technology.