Given the possibilities, the USPS and smart cities would be wise to start collaborating. The Postal Service could be a ready-made partner for smart cities. Christoph Mertz, principal project scientist at Carnegie Mellon University’s Robotics Institute, said smartphones and sensors could be easily equipped to fix potholes before they even start. “The Postal Service could map the city every day with its fleet of vehicles,” said Mertz. Hae Young Noh, assistant professor in Carnegie Mellon University’s civil and environmental engineering department, said there are already sensor projects revolving around public infrastructure. For instance, Noh has three years of data from sensors on trains in Pittsburgh. The USPS could be similar.