How are countries developing high-speed rail networks?

 Maglevs

A maglev, short for MAGnetic LEVitation, is a type of train that uses magnets to hover above the track. This removes the friction from wheels on rails that limits the speed of ordinary trains. Maglev trains can therefore travel faster, as well as more smoothly and quietly, than wheeled trains. They have been tested at speeds of up to 603 km/h (374 mph). Maglevs also use much less fuels.

A maglev train works because “like” magnetic poles push each other apart and "opposite" magnetic poles are attracted to each other. Powerful magnets fixed to the track push and pull magnets fixed to the train in such a way that the train continually moves forwards.

Longest Metro Networks In The World

 1. Metro Network - Shanghai Metro

Location - Shanghai,China 🇨🇳

Total Stations - 508

Network Length(km) - 831 km

No. of travelers annually - 3.88 billion+

2. Metro Network - Beijing Subway

Location - Beijing ,China 🇨🇳

Total Stations - 490

Network Length(km) - 669.4 km

No. of travelers annually - 3.84 billion+

3. Metro Network - London Underground

Location - London ,United Kingdom 🇬🇧

Total Stations - 272

Network Length(km) - 402 km

No. of travelers annually - 1.18 billion+

4. Metro Network - Guangzhou Metro

Location - Guangzhou,China 🇨🇳

Total Stations - 302

Network Length(km) - 621.05 km

No. of travelers annually - 3.31 billion+

5. Metro Network - New York City Subway

Location - New York,United States 🇺🇲

Total Stations - 472

Network Length(km) - 399 km

No. of travelers annually - 1.2 billion+

6. Metro Network - Delhi Metro

Location - Delhi ,India 🇮🇳

Total Stations - 256

Network Length(km) - 350.42 km

No. of travelers annually - 2.03 billion+

7. Metro Network - Moscow Metro

Location - Moscow,Russia 🇷🇺

Total Stations - 236

Network Length(km) - 456 km

No. of travelers annually - 2.5 billion+

8. Metro Network - Wuhan Metro

Location - Wuhan,China🇨🇳

Total Stations - 300

Network Length(km) - 486.3 km

No. of travelers annually - 1.35 billion+

9. Metro Network - Seoul Metro

Location - Seoul,South Korea 🇰🇷

Total Stations - 315

Network Length(km) - 340.4 km

No. of travelers annually - 2.5 billion+

10. Metro Network - Madrid Metro

Location - Madrid,Spain 🇪🇦

Total Stations - 302

Network Length(km) - 293 km

No. of travelers annually - 682 million+