Roundabouts
Roundabouts

Author: Lee August Rodegerdts

Publisher: Transportation Research Board

Published: 2010

Total Pages: 407

ISBN-13: 0309155118

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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.

Thin and Ultra-thin Whitetopping
Thin and Ultra-thin Whitetopping

Author: Robert Otto Rasmussen

Publisher: Transportation Research Board

Published: 2004

Total Pages: 96

ISBN-13: 0309070198

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TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 338: Thin and Ultra-Thin Whitetopping summarizes available information to document how state departments of transportation and others are currently using thin and ultra-thin whitetopping overlays among various pavement rehabilitation alternatives. The report covers all stages of the proper application of whitetopping overlays, including project selection, design, materials selection, construction, maintenance, and eventual rehabilitation or replacement.