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93 result(s) for "Sipes, James L"
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Creating green roadways : integrating cultural, natural, and visual resources into transportation
Roads and parking lots in the United States cover more ground than the entire state of Georgia. And while proponents of sustainable transit often focus on getting people off the roads, they will remain at the heart of our transportation systems for the foreseeable future. In Creating Green Roadways, James and Matthew Sipes demonstrate that roads don't have to be the enemy of sustainability: they can be designed to minimally impact the environment while improving quality of life. The authors examine traditional, utilitarian methods of transportation planning that have resulted in a host of negative impacts: from urban sprawl and congestion to loss of community identity and excess air and water pollution. They offer a better approach—one that blends form and function. Creating Green Roadways covers topics including transportation policy, the basics of green road design, including an examination of complete streets, public involvement, road ecology, and the economics of sustainable roads. Case studies from metropolitan, suburban, and rural transportation projects around the country, along with numerous photographs, illustrate what makes a project successful. The need for this information has never been greater, as more than thirty percent of America's major roads are in poor or mediocre condition, more than a quarter of the nation's bridges are structurally deficient or functionally obsolete, and congestion in communities of all sizes has never been worse. Creating Green Roadways offers a practical strategy for rethinking how we design, plan, and maintain our transportation infrastructure.
Economics of Green Roadways
At the end of the day, one question always comes up when discussing transportation projects: What will it cost?
Transportation Policies
Creating green roadways is a cooperative process designed to foster involvement by all users of the system. The most sustainable approach to transportation would be to maximize use of existing public infrastructure, reduce people’s need to drive, increase roadway connectivity, disperse traffic, and minimize the construction of new roads.
Next Steps in Creating Green Roadways
How do we plan for the next generation of green roadways? Forecasts indicate that the U.S. population will grow from 300 million today to 435 million by 2055. Annual highway travel measured in vehicle miles traveled may increase from three trillion today to as much as seven trillion by 2055 (AASHTO, 2007).
Basic Roadway Design
In the United States, we have been designing and building roadways for a very long time, and over the years our transportation engineers’ understanding of road geometry has become quite sophisticated.
Natural Resources/Environmental Sustainability
A green roadway should be designed, built, and maintained so that it protects the natural environment, is respectful of people and place, and is part of an effort to achieve a sustainable future.
Design and Planning Process for Green Roadways
After sixty years of a transportation planning approach based on the concept that more paving is better, we may finally be at the cusp of a new era. The American Association of State Highway and Transportation Officials’ (AASHTO) Policy on Design of Urban Highways and Arterial Streets (2011), commonly known as the “Red Book,” advocates a design approach where highways have a “tailor-made design for the unique set of conditions along the segment.” This sentiment is at the heart of a green roadways approach.
Cultural/Historic/Visual Resources
What would be the point of building roads if there were no people? Roads exist only because we need them to get from one place to another. We need to start thinking of roads as a critical part of quality of life. Within that context, roads should be constructed or reconstructed so that they are respectful of cultural, historic, and visual resources. Green roadways are as much a part of a community as parks, schools, churches, office buildings, shopping malls, and residential structures.
Constructing Green Roadways
The goal of the construction phase of a green roadway is to build with the smallest possible ecological footprint by reducing carbon dioxide, using more recycled materials, reducing the amount of virgin materials used, and lengthening the life span of the road before it has to be repaired or replaced.