This work describes the evolution of urban transportation planning from its beginnings in early highway and transit planning to late-1990s concerns for the environment and sustainable development. The author discusses the influence of legislation, regulations and federal programmes.

The drawings, models, and images highlighted in the Overdrive exhibition and catalogue reveal the complex and often underappreciated facets of Los Angeles and illustrate how the metropolis became an internationally recognized destination with a unique design vocabulary, canonical landmarks, and a coveted lifestyle. This investigation builds upon the groundbreaking work of generations of historians, theorists, curators, critics, and activists who have researched and expounded upon the development of Los Angeles. In this volume, thought-provoking essays shed more light on the exhibition's narratives, including Los Angeles's physical landscape, the rise of modernism, the region's influential residential architecture, its buildings for commerce and transportation, and architects' pioneering uses of bold forms, advanced materials, and new technologies. The related exhibition will be held at the J. Paul Getty Museum from April 9 to July 21, 2013.

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.