Major Highways in the U.S., Europe, and Asia

Key intercontinental highway networks:

United States (Interstate System)

• I-10: LA → Jacksonville (southern tier)
• I-20: SC → TX (southern east-west)
• I-40: NC → CA (mid-latitude)
• I-5: WA → CA (Pacific Coast)
• I-80: SF → NYC (northern transcontinental)
• I-95: ME → FL (Atlantic Coast)

Europe (National Motorway Networks)

• Germany: Autobahn (no general speed limit on ~70%).
• France: Autoroutes (toll-operated, ~12,000 km).
• Italy: Autostrade (toll, mountainous).
• UK: Motorways (M1, M6, M25, etc.; no tolls except bridges/tunnels).
• Spain: Autopistas (toll) / Autovías (free).

Asia (National Trunk Highways)

• China: China National Highways (G-series) + Expressway Network (world’s longest, 170,000+ km).
• India: National Highways (NH) + Expressways (Golden Quadrilateral, corridors).
• Japan: Expressways (toll, high standard).
• South Korea: Expressways (toll, dense).
• Thailand: Motorways (Intercity) + Expressways (Bangkok).

Each network reflects geography, density, and investment priorities.