Campeche’s new smart traffic lights cut congestion by 27 percent, slash emissions and boost safety, offering a model for Mexico City, Guadalajara and Puerto Vallarta. Campeche’s move to smart traffic lights marks a major leap in Latin American urban mobility. Faced with outdated signals that failed daily, the city turned to Dahua Technology’s AI-driven system. With 124 synchronized smart traffic lights now guiding drivers, residents see 27 percen…