Smart intersections could cut autonomous car congestion

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Researchers have developed a first-of-its-kind model to control traffic and intersections in order to increase autonomous car capacity on urban streets of the future, reduce congestion and minimize accidents.

In the not-so-distant future, city streets could be flooded with autonomous vehicles. Self-driving cars can move faster and travel closer together, allowing more of them to fit on the road — potentially leading to congestion and gridlock on city streets.

A new study by Cornell researchers developed a first-of-its-kind model to control traffic and intersections in order to increase car capacity on urban streets, reduce congestion and minimize accidents.

“For the future of mobility, so much attention has been paid to autonomous cars,” said Oliver Gao, professor of civil and environmental engineering and senior author of the study, which published in Transportation Research Part B.

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These are the 20 most congested cities in the world

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  • The transportation data firm INRIX Research released on Tuesday its annual rankings of the most congested cities in the world.
  • Cities were ranked based on delays caused by congestion, adjusted for each city’s population.
  • Moscow was named the most congested city in the world for the second year in a row, and Europe had more cities in the top 20 than any other continent.

The transportation data firm INRIX Research released on Tuesday its annual rankings of the most congested cities in the world.

The company measured the amount of time lost per capita in 2018 due to the difference between traffic at the busiest and least busy commuting times each day. Cities were ranked based on delays caused by congestion, adjusted for each city’s population.

Moscow was named the most congested city in the world for the second year in a row, and Europe had more cities in the top-20 than any other continent.

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L.A. may charge drivers by the mile, adding freeway tolls to cut congestion

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Morning commuters face heavy traffic on the express lanes on the 10 Freeway. The Metropolitan Transportation Authority’s focus on congestion pricing could lead to similar lanes on other freeways across Los Angeles County. (Irfan Khan / Los Angeles Times)

For years, Southern California lawmakers have tried to steer clear of decisions that make driving more expensive or miserable, afraid of angering one of their largest groups of constituents.

But now, transportation officials say, congestion has grown so bad in Los Angeles County that politicians have no choice but to contemplate charging motorists more to drive — a strategy that has stirred controversy but helped cities in other parts of the world tame their own traffic.

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Could congestion pricing finally work for New York City ?

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Worsening traffic in New York City is a personal inconvenience, an environmental blight, and an economic drag—possibly to the tune of $20 billion. That’s the latest projection by the Partnership for New York City of how much the metro area stands to lose for each the next five years, if nothing is done to unjam cars.

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Getting around the peak car conumdrum

New breakthroughs in connecting cars to the cloud (and eliminating the need for car ownership) show what a better future for cars might look like.

The global automotive industry is on a run by all accounts. Globally, sales are surging. Advances in hybrids, electric vehicles, and even conventional petrol engines are delivering eye-popping mileage gains.

 

 

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Removing Traffic Lights Shown to Improve Flow and Safety

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“Naked Streets” without traffic lights gets rid of frustration

Portishead is a coastal town in England about 120 miles west of London. The town of 22,000 people experimented with turning its traffic lights off on a major road in September 2009. Despite the traffic chaos, the streets still seemed safe.

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