Multiplex networks in metropolitan areas: generic features and local effects

Area of Science:

• Urban planning
• Network science
• Transportation engineering

Background:

• Urban transportation systems are often studied in isolation.
• Understanding the interplay between different transport modes is crucial for effective urban development.

Purpose of the Study:

• To empirically analyze the coupling between street networks and subway systems in London and New York.
• To investigate the impact of multimodal transportation on urban network dynamics and accessibility.

Main Methods:

• Network analysis of quickest paths and betweenness centrality.
• Comparative study of London and New York's integrated transportation networks.

Main Results:

• Similar network behaviors observed in both cities suggest generic mechanisms.
• Subway introduction acts as a decentralizing force, potentially causing congestion at line terminals.
• Increasing subway speed does not always improve accessibility and can create uneven spatial distributions.

Conclusions:

• Multimodal, multilayer network analysis is essential for understanding urban transport dynamics.
• Urban planning decisions must consider the full network effects to prevent unintended consequences and optimize city functioning.