There's a new push in Congress to keep AM radio in newer vehicle models.
A House subcommittee held a hearing Tuesday on a bipartisan bill that would require car makers to keep AM radio in their vehicles, as some manufacturers have started to phase it out in new electric vehicles.
Car companies have argued the electric batteries interfere with AM transmissions.
While testifying before the committee, the commander of New Jersey State Police's Homeland Security Branch Lt. Col. Christopher DeMaise said the technology is essential during times of disaster. He said it's a primary component of the nation's emergency alert system.
Lawmakers also argued tens of millions of Americans rely on AM radio for news and entertainment.