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    <title>Transport Research International Documentation (TRID)</title>
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    <copyright>Copyright © 2026. 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>
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      <title>Transport Research International Documentation (TRID)</title>
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    <item>
      <title>VISION-BASED LATERAL CONTROL OF VEHICLES</title>
      <link>https://trid.trb.org/View/646518</link>
      <description><![CDATA[In this paper, the authors focus on the problem of automated steering using computer vision, with focus on lateral controllers.  They propose a static feedback strategy in which the measurements that are obtained from vision are directly used for control.  The authors further examine the role of lookahead, its relationship to the vision process delay, longitudinal velocity, and road geometry.]]></description>
      <pubDate>Thu, 03 Jul 2003 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/646518</guid>
    </item>
    <item>
      <title>A MIXED-SIGNAL PROCESSOR WITH ITS APPLICATIONS</title>
      <link>https://trid.trb.org/View/727377</link>
      <description><![CDATA[This paper describes a low cost, mixed-signal processor which has the high performance of a special purpose analog chip and also has the programmability and flexibility of a digital system.  The processor can be applied to the vision system and used as an image processor for an automotive intelligent cruise control system.]]></description>
      <pubDate>Fri, 01 Nov 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/727377</guid>
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    <item>
      <title>AN ISOLATED TRAFFIC INTERSECTION FEEDBACK CONTROL USING H [INFINITY]</title>
      <link>https://trid.trb.org/View/723416</link>
      <description><![CDATA[This paper focuses on traffic signal control at an isolated intersection.  The authors describe a robust and demand-responsive control model which provides optimum signalization and queue management, using a feedback control algorithm for a hybrid system.]]></description>
      <pubDate>Tue, 03 Sep 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/723416</guid>
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    <item>
      <title>AUTOMATIC PATH TRACKING USING LINEAR QUADRATIC CONTROL THEORY</title>
      <link>https://trid.trb.org/View/723417</link>
      <description><![CDATA[In this paper, the authors study automatic path tracking performance in the Automated Highway System (AHS) public trials held in Japan in 1996.  They compare proportional-plus-derivative (PD) control and linear quadratic (LQ) control as two potential control systems.  The issue of yaw motion is discussed.  The authors compare path tracking performance when the target path was a straight line.  A method is then described for navigating curves based on logical estimates of the road curvature.  Roadway embedded magnetic markers were used to detect lateral deviation of the vehicle.]]></description>
      <pubDate>Tue, 03 Sep 2002 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/723417</guid>
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    <item>
      <title>ROAD CONDITION RECOGNITION USING MICROWAVES</title>
      <link>https://trid.trb.org/View/694055</link>
      <description><![CDATA[This paper discusses the potential for using microwaves for road condition monitoring.  It describes how the radar signal of a distance control and warning system can be used for road condition monitoring as well as for safety improvement purposes.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694055</guid>
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    <item>
      <title>INITIAL ATTITUDE DETERMINATION AND CORRECTION OF GYRO-FREE INS ANGULAR ORIENTATION ON THE BASIS OF GPS LINEAR NAVIGATION PARAMETERS</title>
      <link>https://trid.trb.org/View/694062</link>
      <description><![CDATA[In this paper, the authors present an algorithm for a gyro-free inertial navigation system (INS) angular parameters correction on the basis of single antenna Global Positioning System (GPS).  The algorithm is based on the alignment of a fictitious coordinate frame with an Earth-referenced frame using fictitious frame rotation. Rotational axes and angles of rotation are used to define angular orientation correction parameters.  The authors describe the process for the realization of the attitude correction algorithm.  Simulation results confirm the correctness of the proposed method.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694062</guid>
    </item>
    <item>
      <title>FIBER OPTIC GYROSCOPES FOR VEHICULAR USE</title>
      <link>https://trid.trb.org/View/694065</link>
      <description><![CDATA[This paper focuses on the application of interferometric fiber optic gyroscopes  (IFOG) in vehicle navigation and stabilization.  The paper first describes the concept of  IFOGs.  This is followed by a discussion regarding IFOG performance data for bias and scale factor versus temperature as well as rate linearity.  Current applications for low-cost FOGs are briefly discussed, including on-the-road land navigation and annunciators on buses.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694065</guid>
    </item>
    <item>
      <title>RELIABILITY ANALYSIS OF AN ITS NAVIGATION SYSTEM</title>
      <link>https://trid.trb.org/View/694063</link>
      <description><![CDATA[This paper addresses the issue of reliability of navigation systems. It focuses on a particular system which consists of a Global Positioning System (GPS) receiver, a rate gyro, and a digital map. Map matching is performed during system integration and errors from the digital map, the GPS, and the gyro sensors are examined.  The minimum detectable bias (MDB) for the GPS-only system is first studied.  The ability of the gyro and digital map to improve reliability is then examined.  Two test data sites from an open area and a downtown area are used to demonstrate the reliability of the integrated system.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694063</guid>
    </item>
    <item>
      <title>REDUNDANCY IN A ROAD-FOLLOWER FOR SAFETY, RELIABILITY AND AVAILABILITY</title>
      <link>https://trid.trb.org/View/694054</link>
      <description><![CDATA[In this paper, the authors present a an architecture which is based on a philosophy of redundancy in which diverse modalities are integrated to improve the safety, reliability and availability of automated highways technology.  Three road-following systems are discussed: a machine vision system, a navigation system, and a magnetometer system. Results from two sets of multiple modality road-following experiments are described.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694054</guid>
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    <item>
      <title>ACCELEROMETER BASED GYRO FREE MULTI-SENSOR GENERIC INERTIAL DEVICE FOR AUTOMOTIVE APPLICATIONS</title>
      <link>https://trid.trb.org/View/694064</link>
      <description><![CDATA[This paper presents the design for a multi-sensor inertial navigation system (INS) as well as the architecture of an accelerometer-based low-cost INS for automotive applications.  Excluding gyroscopes from the inertial system reduces the cost, while the multi-sensor based inertial system can still deliver data at sufficient accuracy for inertially-supported systems.  The paper discusses the importance of optimizing the parts of the design that permit formalization yet involve tedious work.  The original approach to the choice of optimal sequence of elementary operations is also described.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694064</guid>
    </item>
    <item>
      <title>SURFACE MICROMACHINED SENSORS FOR VEHICLE AND PERSONAL NAVIGATION SYSTEMS</title>
      <link>https://trid.trb.org/View/694068</link>
      <description><![CDATA[This paper first discusses the application of accelerometers to navigation.  It then describes surface micromachining fundamentals focusing on sensor design and operation.  An accelerometer that is capable of achieving sufficient accuracy at a low cost is described suggesting it as an effective solution for vehicle navigation systems.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694068</guid>
    </item>
    <item>
      <title>MICROMACHINED INERTIAL SENSORS FOR VEHICLES</title>
      <link>https://trid.trb.org/View/694066</link>
      <description><![CDATA[In this paper, the authors discuss the recent advances in the design and packaging of micromechanical gyroscopes and accelerometers.  They describe the performance of a prototype automotive traction control module and a planned automobile suspension control module.  The concept of a multi-purpose microelectromechanical systems (MEMS) inertial system, which based on a three-gyro, three-accelerometer system under development for a guided artillery shell, is discussed for automotive applications.  Plans are also presented for anticipated future cost and size reductions.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694066</guid>
    </item>
    <item>
      <title>AN AGENT FOR INTELLIGENT SPACES : FUNCTIONS AND ROLES OF MOBILE ROBOTS IN SENSORED, NETWORKED AND THINKING SPACES</title>
      <link>https://trid.trb.org/View/694053</link>
      <description><![CDATA[In this paper, the authors describe an a mobile robots designed to function as an agent in intelligent spaces.  They first describe the intelligent space and mobile robot system.  A stereo vision system capable of tracking the 3D movements of humans and mobile robots in real time is used as the visual sensor in the intelligent space.  In order to avoid unexpected obstacles , the mobile robot uses ultrasonic sensors.  Rotary encoders are used for simple self-localization. Results from simulations and experiments are presented.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694053</guid>
    </item>
    <item>
      <title>AN IMAGE PROCESSING METHOD TO DETECT ROAD SURFACE CONDITION USING OPTICAL SPATIAL FREQUENCY</title>
      <link>https://trid.trb.org/View/694056</link>
      <description><![CDATA[This paper presents a road surface recognition method at fixed positions on the road, using a light source and a CCD camera.    The method is based on a certain optical configuration with a large detection range.  It also takes into account road gloss and uses a sensor to transform the road surface image into spatial frequency spectra.]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694056</guid>
    </item>
    <item>
      <title>A VISION AUGMENTED NAVIGATION SYSTEMS</title>
      <link>https://trid.trb.org/View/694061</link>
      <description><![CDATA[This paper presents a method for estimating an autonomous helicopter's translational and rotational velocities from an onboard camera during landing operations.  Other available navigational elements that are present on the helicopter are used to simplify the vision processing and resolve typical image interpretation ambiguities.  An integrated approach is used in which the vision system processing is done not in isolation but in the larger contest of the overall navigation problem. The camera-based motion estimates are shown to be accurate enough to replace or augment an Inertial-based and GPS-based navigation system]]></description>
      <pubDate>Wed, 31 Oct 2001 00:00:00 GMT</pubDate>
      <guid>https://trid.trb.org/View/694061</guid>
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