Which IoT innovation did the city of Barcelona implement first to revolutionize urban transportation and reduce traffic congestion by 21%?

The transportation industry has been transformed by Internet of Things (IoT) technology in recent years. From smart traffic management to connected vehicles and intelligent logistics, IoT has revolutionized how people and goods move. This trivia question tests your knowledge about a groundbreaking IoT implementation that changed urban transportation efficiency. Think about major technological advances in transportation infrastructure before selecting your answer!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Smart parking sensors that detect empty spaces and guide drivers via mobile app
Autonomous shuttle buses that communicate with traffic signals in real-time
Connected bike-sharing stations with predictive demand allocation
Dynamic road pricing based on real-time congestion monitoring