1. Implement a network of underground tunnels for autonomous electric vehicles to reduce congestion on the surface level. 
2. Create a comprehensive public transportation system, including sky trams and hyperloop trains, to encourage a shift away from personal vehicles. 
3. Incentivize the establishment of remote working hubs for businesses to distribute the population more evenly and reduce the need for daily commuting.
Take the role of a futuristic city planner, and suggest three innovative strategies to manage the traffic problem in a densely populated metropolis.