Smart cities get a tech-savvy glow with combos like 🏙️🌐💡 and 🚦📱🚍🌆, showing off connected streets and digital transit. Hit up urban planners or tech enthusiasts with 🏢🌳🚦🌍 when discussing green infrastructure, or toss 🏙️🚍📊 into a report on public transit data. These emoji blends fit city updates, presentations, or casual chats about the future of urban life.