ALEXANDRIA, Va., July 9 -- United States Patent no. 12,351,223, issued on July 8.
"Railroad crossing warning system for enhanced route planning" was invented by Meet Patel (Happy Valley, Ore.) and Nathan Matos De Almeida (Ceara, Brazil).
According to the abstract* released by the U.S. Patent & Trademark Office: "In an embodiment, a system for detection of trains at railroad crossings is provided. The system comprises a field-deployed detection and reporting device comprising a microphone, a communication module, a microprocessor, and an application. When executed on the microprocessor, the application receives data describing sounds captured by the microphone and identifies frequencies of a first received sound. The application also trans...