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Caltrans' New Website to Launch - July 1, 2019
Caltrans is committed to enhanced digital accessibility.
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REBUILDING CALIFORNIA - Senate Bill 1
Senate Bill 1, the Road Repair and Accountability Act
of 2017 invests $54 billion over the next decade
to fix roads, freeways and bridges.
See where the money is going at www.rebuildingca.ca.gov.
Rating Highway Conditions
Disastrous Fire Season
State Rail Revival
SB 1 Opportunities for Small and Diverse Businesses
Under SB 1, Caltrans will be increasing its outreach and training efforts
aimed at helping small businesses make connections and learn
how to navigate contracting with the State.
Roundabout intersections on the State highway system must be developed and evaluated in accordance with National Cooperative Highway Research Program (NCHRP) Report 672 entitled “Roundabouts: An Informational Guide, 2nd ed.” (NCHRP Guide 2) dated October 2010 and Traffic Operations Policy Directive (TOPD) Number 13-02. See also Index 401.5 for general information and guidance. See Figure 405.10 Roundabout Geometric Elements for nomenclature associated with roundabouts. Signs, striping and markings at roundabouts are to comply with the California MUTCD.
This directive updates the evaluation procedures used to:
This report updates the FHWA’s Roundabouts: An Informational Guide based on experience gained in the United States since that guide was published in 2000. The report addresses the planning, design, construction, maintenance, and operation of roundabouts. It also includes information that will be useful in explaining to the public the trade-offs associated with roundabouts. This Second Edition of Roundabouts: An Informational Guide will be useful to anyone interested in evaluating or building a roundabout. The experience of the research team, coupled with the extensive review, has led to an authoritative, but not prescriptive, guide on roundabouts.
Updated: September 8, 2015
Department of Transportation
Landscape Architecture Program
1120 N Street, MS 28
Sacramento, CA 95814
Headquarters and District Landscape Architecture contacts