<?xml version="1.0" encoding="utf-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>TRB Publications Index</title><link>http://pubsindex.trb.org/</link><atom:link href="http://pubsindex.trb.org/common/TRIS Suite/feeds/rss.aspx?tc=NN%3ADcmthrc" rel="self" type="application/rss+xml" /><description></description><language>en-us</language><copyright>Copyright © 2015. National Academy of Sciences. All rights reserved.</copyright><docs>http://blogs.law.harvard.edu/tech/rss</docs><managingEditor>tris-trb@nas.edu (Bill McLeod)</managingEditor><webMaster>tris-trb@nas.edu (Bill McLeod)</webMaster><image><title>TRB Publications Index</title><url>http://pubsindex.trb.org/Images/PageHeader-wTitle.png</url><link>http://pubsindex.trb.org/</link></image><item><title>Traffic-Calming Measures Affecting Perceived Speed in Approaching Bends: On-Field Validated Virtual Environment</title><link>http://pubsindex.trb.org/view/1288949</link><description><![CDATA[With the aim of reducing the number of road traffic deaths around the world, the United Nations General Assembly proclaimed 2011–2020 the Decade of Action for Road Safety. Excessive speed is one of the main problems to overcome. The aim of this study was to test the effectiveness of traffic-calming measures in reducing drivers’ speed along a road with a dangerous bend in an inland area near Venice, Italy. The driving simulator of the Transportation Laboratory of the University of Padua and the simulated scenario were validated by reproducing the study site environment. A driving simulator experiment was conducted to analyze changes in speed profiles associated with various countermeasures: evenly spaced guideposts, tall guideposts, narrowing guideposts, and dragon’s teeth markings. Tall and narrowing guideposts served to reduce drivers’ speed by up to 2.7 km/h. Unlike tall guideposts, which produced no detrimental effect on drivers’ behavior, narrowing guideposts led drivers to occupy more variable positions within the lane. In view of this at-risk behavior, the convenience of the option to produce an apparent narrowing of the lane on real roads was discussed. This study found that the use of driving simulators was a reliable research tool to reproduce drivers’ real behavior. The study also provided effective, low-cost measures to counteract excessive speed on dangerous road sections.]]></description><pubDate>Mon, 01 Dec 2014 10:45:26 GMT</pubDate><guid>http://pubsindex.trb.org/view/1288949</guid></item><item><title>Modeling Lane Change Distance for Sign Placement</title><link>http://pubsindex.trb.org/view/848284</link><description><![CDATA[Placement of guide signs on highway is an important task to field traffic engineers. It relates to many factors, such as traffic conditions, highway geometry and driver behavior, etc., and may vary from region to region. It is crucial to effectively determine the guide sign placement so that drivers on highway can take the desired exit timely and avoid any abrupt maneuvers. This paper presents models of utilizing lane change distance to derive the sign placement. The models are estimated using detailed vehicle trajectory data at a high resolution collected in naturalistic driving environment. The entire lane change process is divided into several sub-maneuvers (from one lane to an adjacent lane), while models for each sub-maneuver are presented separately. Instead of statically determining the sign placement, the proposed methodology takes various factors into consideration, including traffic flow characters, highway geometries, and vehicle interactions. Based on reasonable assumptions on driver’s vision, advance distance of guide sign placement under prevailing traffic conditions is thereby estimated. The methodology provided in this paper can work as a supplemental reference to MUTCD for placing guide signs more efficiently.]]></description><pubDate>Wed, 21 May 2008 07:05:37 GMT</pubDate><guid>http://pubsindex.trb.org/view/848284</guid></item><item><title>DEVELOPMENT OF AN ANALYTICAL PROCEDURE FOR PREDICTION OF HIGHWAY BARRIER PERFORMANCE</title><link>http://pubsindex.trb.org/view/93676</link><description><![CDATA[A THREE-YEAR TESTING PROGRAMME AT CORNELL AERONAUTICAL LABORATORY INCLUDED THE FULL-SCALE DYNAMIC TESTING OF BARRIERS ON CENTRAL RESERVE, GUIDE RAILS AND BRIDGE RAILS TO GIVE A FULLER UNDERSTNADING OF THE FORCES INVOLVED BETWEEN VEHICLE AND BARRIER DURING COLLISION. MATHEMATICAL MODELS FOR PREDICTING THE PERFORMANCE OF BARRIER DESIGNS HAVE BEEN DEVELOPED, AND PREDICTED PERFORMANCE HAS BEEN VERIFIED BY FULL-SCALE CRASH TESTS. /RRL/]]></description><pubDate>Mon, 12 Dec 1994 00:00:00 GMT</pubDate><guid>http://pubsindex.trb.org/view/93676</guid></item></channel></rss>