TRB's National Cooperative Highway Research Program (NCHRP) Report 672: Roundabouts: An Informational Guide - Second Edition explores the planning, design, construction, maintenance, and operation of roundabouts. The report also addresses issues that may be useful in helping to explain the trade-offs associated with roundabouts. This report updates the U.S. Federal Highway Administration's Roundabouts: An Informational Guide, based on experience gained in the United States since that guide was published in 2000.

This book presents a history of roundabouts, an introduction to their design, calculations of their capacity and traffic-safety features. It describes the key features of standard roundabouts and their limitations. Alternative types of roundabouts are a fairly recent development and have only been implemented in a few countries to date. The book illustrates a broad variety of these recent alternative types of roundabouts, as well as proposed types still in the development phase, explaining for each the specific needs it meets, its advantages and drawbacks. In closing, the book offers an outlook on the role of roundabouts in future street traffic.

This is the first ever book devoted to the popular hobby of roundabout spotting, featuring over 80 full-colour favourites from humble painted minis to magnificent landscaped beauties, advice on the practical side of the pastime, and an exposition of the traffic-island's colourful history.

This guide replaces the 1984 publication entitled An Informational Guide for Roadway Lighting. It has been revised and brought up to date to reflect current practices in roadway lighting. The guide provides a general overview of lighting systems from the point of view of the transportation departments and recommends minimum levels of quality. The guide incorporates the illuminance and luminance design methods, but does not include the small target visibility (STV) method.

One common feature of the wave of recent revolutions and revolts around the world is not political but rather architectural: many erupted on inner-city roundabouts. In thinking about the relation between protest and urban form, Eyal Weizman starts with the May 1980 uprising in Gwangju, South Korea, the first of the “roundabout revolutions,” and traces its lineage to the Arab Spring and its hellish aftermath. Rereading the history of the roundabout through the vortices of history that traverse it, the book follows the development of the roundabout in Europe and North America in the early twentieth century, to its subsequent export to the colonial world in the context of attempts to discipline and police the “chaotic” non-Western city. How did an urban apparatus put in the service of authoritarian power became the locus of its undoing? Today, as the tide of revolt that characterized the Arab Spring seems to ebb, when nations and societies disintegrate by brutal civil wars and military oppression, the series of revolutions might seem like Dante's circles of hell. To counter this counter-revolution, Weizman proposes that the immanent power of the people at the roundabouts will need to find its corollary in sustained work at round tables—the ongoing formation of political movements able to enact political change. The sixth volume of the Critical Spatial Practice series stems from Eyal Weizman's contribution to the Gwangju Folly II in 2013, an exhibition curated by Nikolaus Hirsch with Philipp Misselwitz and Eui Young Chun for the Gwangju Biennale. Weizman and the architect Samaneh Moafi constructed a folly composed of seven roundabouts and a round table in front of the Gwangju train station, one of the central points in the events of May 1980. Critical Spatial Practice 6 With Blake Fisher and Samaneh Moafi Edited by Nikolaus Hirsch, Markus Miessen Featuring photography by Kyungsub Shin