Hidden Radios in Highway Infrastructure-China’s Role?

Are hidden radios in America’s highway infrastructure a Chinese sabotage threat? A Reuters report raised alarms, citing a U.S. Department of Transportation advisory about undocumented cellular radios in foreign-made solar inverters and battery systems powering EV chargers, traffic cameras, and more. With China dominating the solar market, we dug in to uncover the truth. A whisper of sabotage, but no smoking gun in the wires—here’s what we found.

The Claim

On August 20, 2025, the Federal Highway Administration (FHWA) issued a security advisory warning that “undocumented cellular radios” were found in foreign-manufactured power inverters and battery management systems (BMS) used in U.S. highway infrastructure, like EV chargers, traffic cameras, weather stations, and signs. Reuters ties this to fears of Chinese technology, suggesting these devices could enable remote tampering, outages, or data theft.

What the Evidence Shows

We checked the evidence to pin down the facts:

• Chinese Connection: In May 2025, Reuters reported rogue communication devices, including cellular radios, in Chinese-made solar inverters and batteries used in U.S. energy grids, confirmed by experts inspecting equipment. Sources didn’t name manufacturers for security reasons, but China’s 78% share of the global inverter market makes it the likely source (Reuters, May 2025).
• Global Echoes: Green Power Denmark found similar “unexplained electronic components” in imported energy equipment in May 2025, aligning with U.S. concerns about foreign tech ([Reuters, May 2025](https://www.re sabeit.com/article/solar-inverter-security-risks)).
• Expert Warnings: Anomadarshi Barua from George Mason University noted that such devices could disrupt systems, like causing power surges or affecting autonomous vehicles (Reuters, September 2025).
• The Advisory: The FHWA’s four-page note, not publicly released, urges scanning devices and disabling radios but calls them “foreign-manufactured” without naming China. This cautious language leaves a small gap, though prior evidence points strongly to Chinese origins.

The May 2025 findings and China’s market dominance make it highly probable these highway devices are Chinese-made. However, no public evidence confirms they’re designed for sabotage, though their presence is a real security risk.

Our Verdict: Likely True

The claim is likely true. Undocumented radios exist in imported solar equipment, as confirmed by U.S. and Danish reports, and China’s overwhelming market share (78%) strongly suggests they’re Chinese-made. The FHWA advisory’s vague “foreign” label doesn’t rule out China, but without its full text, we can’t confirm 100%. Claims of sabotage remain unproven—serious, but speculative. The bent compass of suspicion points to China, and the needle’s steady.

Why It Matters

Our highways rely on solar-powered systems for safety and efficiency. Hidden radios in Chinese-made devices could, in theory, allow remote disruptions or data leaks, threatening public trust and infrastructure. But fear of sabotage shouldn’t outrun evidence. We need facts, not panic, to secure our roads.

What You Can Do

Push for transparency from the FHWA—demand the advisory’s details and device origins. Support rigorous scanning of highway equipment to catch risks early. Stay vigilant, not fearful, about foreign tech in our infrastructure.

Truth cuts through noise—let’s keep it sharp.

Stay curious, stay informed!