The small town of Perugia, Italy has left its traffic worries behind by implementing various driving restrictions and transportation solutions like escalators and a "minimetro".
Feb 3, 2011 National Geographic
Escalators are major energy wasters, so many cities are looking for greener solutions. 35 new green escalators were recently installed in the New York Subway, with mixed success.
Aug 13, 2008 The New York Times
<p>This article from <em>Next American City</em> looks at escalators -- the expensive, energy-intensive, and often under-used transportation mode.</p>
Jun 27, 2008 The Next American City