Advertisements The problem with most police radios is that they operate on a repeater system. Which means the handsets (and car radios) transmit to a tower and that tower repeats that transmission over a much larger distance. These towers mostly operate autonomously but they require electricity. Since the power grid went offline so long ago, any battery backups would have long been drained. So any time they try to talk with the radios, they would be talking to a dead tower. That shouldn't stop them from finding an alternative though. CB radio would be great for vehicle to vehicle communication. They make hand held CBs but they suck. Another alternative would be FRS units but they have a limited range. Still, better than nothing. One major down side I see to using unsecure radios (CBs and FRS) is that they are broadcasting in the clear. Meaning anyone else that has one of those radios and on the same channel can hear them. This could be good and bad. Good to know there is someone else out there. Bad if it happens to be Randall's gang of 30.