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Animation: China’s Rapid Transit Boom (1990 – 2020)

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After decades of hyper-growth and worsening pollution, China has fully embraced rapid transit as a way to keep cities moving. By 2020, China aims to have 7,000 km (4,300 mi.) of rapid transit lines, more than five times what exists in the U.S. today.

The following animation from Peter Dovak shows this rapid transit revolution playing out by year:

China's Rapid Transit Boom

MIND THE GAP

In the above animation, there’s a distinct uptick in the number of projects started after 2004. It was in this year that the government lifted a ban on new metro construction, after worsening congestion and pollution caused the government to rethink their stance. There has been a rapid transit boom in the country ever since.

Soon, minimum population requirements for cities looking to build subway systems will be halved from 3 million to 1.5 million, and this move is expected to set off an even bigger wave of infrastructure investment in cities throughout the country.

RISING RATIOS

Hundreds of kilometers of track are being added each year. As a result of this unparalleled pace of metro construction, China’s ratio of Rapid Transit to Residents (RTR) has risen steeply over the last 15 years.

Transit to Resident Ratio in China

RTR is a ratio that compares the length of rapid transit lines (measured in kilometers) with the country’s urban population (measured in millions of people). As you can see, China is making great strides in building urban transit networks, though it is still catching up to countries like Germany, which has a RTR of 81.

Chinese cities have a blend of attributes that make constructing metro lines an appealing option: fewer regulatory hurdles, a low cost of labor, and a high-density urban fabric. Also, because transit is treated as an essential public service (i.e. not expected to be profitable), China’s metros provide affordable mobility to its citizens. Even with Beijing’s recent metro fare increase, most rides only cost about ¥3 to ¥8, or $0.45 to $1.45.

Shanghai is now home to the longest metro system by route length, and the Beijing Subway has the highest ridership in the world. Not bad for cities that lacked any substantive transit system until the 1990s.

beijing shanghai metro construction

By 2020, China is expected to have 220+ cities with over a million inhabitants, so as long as the government can continue to provide the resources and funding to expanding transit networks, the building boom will likely continue unabated.

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Maps

The Largest Earthquakes in the New York Area (1970-2024)

The earthquake that shook buildings across New York in April 2024 was the third-largest quake in the Northeast U.S. over the past 50 years.

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Map of earthquakes with a magnitude of 4.0 or greater recorded in the northeastern U.S. since 1970.

The Largest Earthquakes in the New York Area

This was originally posted on our Voronoi app. Download the app for free on Apple or Android and discover incredible data-driven charts from a variety of trusted sources.

The 4.8 magnitude earthquake that shook buildings across New York on Friday, April 5th, 2024 was the third-largest quake in the U.S. Northeast area over the past 50 years.

In this map, we illustrate earthquakes with a magnitude of 4.0 or greater recorded in the Northeastern U.S. since 1970, according to the United States Geological Survey (USGS).

Shallow Quakes and Older Buildings

The earthquake that struck the U.S. Northeast in April 2024 was felt by millions of people from Washington, D.C., to north of Boston. It even caused a full ground stop at Newark Airport.

The quake, occurring just 5 km beneath the Earth’s surface, was considered shallow, which is what contributed to more intense shaking at the surface.

According to the USGS, rocks in the eastern U.S. are significantly older, denser, and harder than those on the western side, compressed by time. This makes them more efficient conduits for seismic energy. Additionally, buildings in the Northeast tend to be older and may not adhere to the latest earthquake codes.

Despite disrupting work and school life, the earthquake was considered minor, according to the Michigan Technological University magnitude scale:

MagnitudeEarthquake EffectsEstimated Number
Each Year
2.5 or lessUsually not felt, but can be
recorded by seismograph.
Millions
2.5 to 5.4Often felt, but only causes
minor damage.
500,000
5.5 to 6.0Slight damage to buildings
and other structures.
350
6.1 to 6.9May cause a lot of damage
in very populated areas.
100
7.0 to 7.9Major earthquake.
Serious damage.
10-15
8.0 or greaterGreat earthquake. Can totally
destroy communities near the
epicenter.
One every year
or two

The largest earthquake felt in the area over the past 50 years was a 5.3 magnitude quake that occurred in Au Sable Forks, New York, in 2002. It damaged houses and cracked roads in a remote corner of the Adirondack Mountains, but caused no injuries.

DateMagnitudeLocationState
April 20, 20025.3Au Sable ForksNew York
October 7, 19835.1NewcombNew York
April 5, 20244.8Whitehouse StationNew Jersey
October 16, 20124.7Hollis CenterMaine
January 16, 19944.6Sinking SpringPennsylvania
January 19, 19824.5SanborntonNew Hampshire
September 25, 19984.5AdamsvillePennsylvania
June 9, 19754.2AltonaNew York
May 29, 19834.2PeruMaine
April 23, 19844.2ConestogaPennsylvania
January 16, 19944.2Sinking SpringPennsylvania
November 3, 19754Long LakeNew York
June 17, 19914WorcesterNew York

The largest earthquake in U.S. history, however, was the 1964 Good Friday quake in Alaska, measuring 9.2 magnitude and killing 131 people.

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