Some urban rail and bus services have reported increased ridership as gas prices have gone up.

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Over 200 new urban rail lines are under construction around the world, but most are wholly government-financed.

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Ballantine had pledged to cut personal and corporate income tax rates and to use state transportation funding for roads rather than urban rail projects.

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The current trip between Chengdu and Mianyang takes approximately 2.5 hours, but the new urban rail will reduce travel time to just 15 to 20 minutes.

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The city has launched a regulated bus rapid-transit system and has begun work to develop a reliable and affordable urban rail system as part of efforts to sort out its legendary snail-paced traffic.

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Charging motorists for scarce road space, with most of the revenues being used to finance improvements in bus, rail or urban mass-transit systems, is the only sensible route to restraint.

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That change in perception is providing more momentum for some cities that were already moving away from six-lane highways and suburbs dozens of miles apart, to a series of urban centers connected by light rail and other mass transit systems.

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The researchers will leverage a first-of-its-kind learning and predictive analytics tool called the IBM Traffic Prediction Tool (TPT), developed by IBM Research, which continuously analyzes congestion data, commuter locations and expected travel start times throughout a metropolitan region that can affect commuters on highways, rail-lines and urban roads.

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Its main city, Portland, became the poster child of the "smart growth" movement by forcing up density, building an extensive light-rail system and restoring its urban core.

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Situated about 12 km west of central Hong Kong, the park will be linked to the airport and the urban area by a spur from the existing high-speed rail line to the airport, and by highway and by ferry.

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