The document reports the state of traffic calming programs in the United States. It also includes historical information about programs in other countries. For the purposes of this report, traffic calming involves changes in street alignment, installation of barriers, and other physical measures to reduce traffic speeds and cut-through volumes in the interest of street safety, livability, and other public purposes. This report focuses mainly on physical measures, including street closures and other volume controls under the traffic calming umbrella. Education and enforcement activities, such as neighborhood traffic safety campaigns, fall outside the umbrella but will be mentioned where relevant.

This guide provides a general discussion on the problem of residential speeding. Topics covered include an overview of common beliefs and attitudes about speeding and the factors that contribute to it. The guide identifies questions to ask when dealing with a residential speeding problem, proposes numerous responses to the problem and identifies ways to measure the effectiveness of responses to the problem.

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.

FUNDAMENTALS OF AIR TRAFFIC CONTROL International Edition is an authoritative book that provides readers with a good working knowledge of how and why the air traffic control system works. This book is appropriate for future air traffic controllers, as well as for pilots who need a better understanding of the air traffic control system. FUNDAMENTALS OF AIR TRAFFIC CONTROL, International Edition discusses the history of air traffic control, emphasizing the logic that has guided its development. It also provides current, in-depth information on navigational systems, the air traffic control system structure, control tower procedures, radar separation, national airspace system operation and the FAA's restructured hiring procedures. This is the only college level book that gives readers a genuine understanding of the air traffic control system and does not simply require them to memorize lists of rules and regulations.