Bus

Group: Vehicle emissions to increase 300% by 2050

Posted on August 7, 2012

Emissions from transportation are the fastest growing source of global greenhouse gas emissions, with emissions expected to increase 300% by 2050, according to research by the Worldwatch Institute.

Today, emissions from transportation contribute to approximately 80% of the harmful air pollutants that result in 1.3 million premature deaths annually, according to Michael Replogle and Colin Hughes of the Institute for Transportation & Development Policy (ITDP). The two authored the fourth chapter, "Moving Toward Sustainable Transport,” in Worldwatch's book “State of the World 2012: Moving Toward Sustainable Prosperity,” published in April.

The largest financial commitment made at the Rio+20 Conference on Sustainable Development in June 2012 was a pledge by the eight largest multilateral development banks (MDBs) to commit 500 staff and dedicate $175 billion for more sustainable transportation in the coming decade. This unprecedented agreement was facilitated by the Partnership on Sustainable Low Carbon Transport (SLoCaT), which brings together 68 MDBs, civil society organizations, UN agencies, and research and industry organizations.

"This action promises to begin countering decades of unsustainable investments in transportation systems, such as building high-capacity motorways," said Michael Renner, Worldwatch sr. researcher and State of the World 2012 project co-director. "But it will require new resources for civil society groups to be able to ensure independent monitoring of impacts and follow-through by MDBs."

"If transportation investments and management policies foster walking, cycling, use of high quality public transportation and smart traffic management, growing urbanization can reduce consumption of scarce resources; protect public health; and deliver happier, nicer cities," said Michael Replogle, managing director, policy, and Founder of ITDP and “State of the World 2012” contributing author. "These unprecedented MDB financial and reporting commitments present an opportunity to leverage large shifts in domestic and private transportation investment and to build capacity for a paradigm shift."

Current transportation and land development patterns disadvantage the poor, often forcing them to choose between low incomes in informal-sector employment that is close to affordable housing, or somewhat higher-paying jobs that are reachable only if they spend a large share of their income and hours each day commuting. In many cities, the urban poor cannot afford public transportation and end up walking long distances. Additionally, in many places it is unsafe to walk.

The key to this approach is a new sustainability paradigm called "Avoid, shift and improve":

  • Avoid unnecessary trips with smarter planning, pricing, and telecommunications.
  • Shift trips to more sustainable modes with investments in bus rapid transit (BRT), walking, cycling and traffic management, by limiting and pricing parking, by applying polluter-pays incentives and offering better traveler information.
  • Improve vehicle efficiency with cleaner fuels, better-operated networks, and efficient vehicle technology adapted to local conditions and requirements.

In their State of the World chapter, Replogle and Hughes highlight three examples of this approach, revealing how it improves transport in urban areas:

  • BRT in Bogota, Colombia: In 2000, Bogota opened TransMilenio, a BRT system with nine routes extending 54 miles throughout the city. By 2011, TransMilenio's ridership was up to 1.7 million passengers daily and the fare for a single trip was about 85 cents.
  • Congestion and emission charging in London: Drivers who enter congested central London pay a "congestion charge." The drivers have the option to pay approximately $15 in advance, or they must pay the charge within a certain time after driving through the congested streets, or be fined up to about $184. The charge generates funds for public transportation, and bus use is up 6% during charging hours. A similar Low Emission Zone covers heavy goods vehicles across the whole city, charging more polluting trucks and buses approximately $150 to $300 to drive in the area.
  • Public bicycles in Hangzhou, China: With a population of 6.7 million, Hangzhou is one of China's fastest-growing cities. This growth comes with rapid motorization. In 2008, Hangzhou launched a bike-share program that currently provides 60,000 bikes. The program has alleviated pressure on roadways and is accessible to all because of its pricing scheme — the first hour of bike use is free and the second hour is approximately 15 cents. The city reports that 90% of total trips are made in that first free hour, and more than 25% of trips are made during peak commuting times.
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