<rss version="2.0" xmlns:atom="https://www.w3.org/2005/Atom">
  <channel>
    <title>Transport Research International Documentation (TRID)</title>
    <link>https://trid.trb.org/</link>
    <atom:link href="https://trid.trb.org/Record/RSS?s=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" rel="self" type="application/rss+xml" />
    <description></description>
    <language>en-us</language>
    <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>
    <image>
      <title>Transport Research International Documentation (TRID)</title>
      <url>https://trid.trb.org/Images/PageHeader-wTitle.jpg</url>
      <link>https://trid.trb.org/</link>
    </image>
    <item>
      <title>Road Simulation Techniques for Reproducing Vehicle Behavior at Motocross Running on a Track</title>
      <link>https://trid.trb.org/View/1571319</link>
      <description><![CDATA[A Road Simulator was developed with the aim of reproducing actual vehicle behavior while running on motocross (MX) track in a laboratory. Vehicle behavior while running on an MX track is influenced by various inertial forces, such as jump landing, acceleration at full throttle, reduced speed at full braking and so on, and also load input from the rider to handlebars and footrests. As all influences must be considered, these inertial force and external force should be applied to a vehicle in laboratory tests.         To reproduce various inertial forces such as falling inertia at jump landing, longitudinal inertia during acceleration or deceleration, and rider body action on the vehicle, Active restraint systems must be added instead of the traditional method of Road Simulator that controls wheel axle’s vertical and longitudinal directions with actuators. The number of hydraulic actuator was increased, therefore all actuators must be controlled to eliminate any interaction effect of other actuator load and action. Furthermore, introducing actuator control technology that separated Frequency Response Function (FRF) by each running event, eventually the reproduction of MX running in a laboratory test was successful.         As a result, 5% or less of root mean square (RMS) error value has been accomplished by wheel axis load, acceleration and suspension displacement during the reproduction of MX running. Herewith, accumulated fatigue damage degree of each part of frame has also been reproduced with high accuracy. From the above, we have achieved replicated MX running behavior in indoor laboratory tests, namely we are able to produce stable durability tests without variables of course conditions such as rain, differences caused by rider variations, etc. Moreover the test has been able to run consecutively day and night, so the test period has been shortened. In addition, various mechanisms occurring on vehicle have been able to be understood in detail during the approach to reproduce vehicle behavior and load in laboratory testing.       ]]></description>
      <pubDate>Thu, 20 Dec 2018 15:32:12 GMT</pubDate>
      <guid>https://trid.trb.org/View/1571319</guid>
    </item>
    <item>
      <title>Motocross-associated head and spine injuries in adult patients evaluated in an emergency department.</title>
      <link>https://trid.trb.org/View/1486457</link>
      <description><![CDATA[Motor vehicle-related injuries (including off-road) are the leading cause of traumatic brain injury (TBI) and acute traumatic spinal cord injury in the United States. To describe motocross-related head and spine injuries of adult patients presenting to an academic emergency department (ED). The authors performed an observational cohort study of adult ED patients evaluated for motocross-related injuries from 2010 through 2015. Electronic health records were reviewed and data extracted using a standardized review process. A total of 145 motocross-related ED visits (143 unique patients) were included. Overall, 95.2% of patients were men with a median age of 25 years. Sixty-seven visits (46.2%) were associated with head or spine injuries. Forty-three visits (29.7%) were associated with head injuries, and 46 (31.7%) were associated with spine injuries. Among the 43 head injuries, 36 (83.7%) were concussions. Seven visits (16.3%) were associated with at least 1 head abnormality identified by computed tomography, including skull fracture (n=2), subdural hematoma (n=1), subarachnoid hemorrhage (n=4), intraparenchymal hemorrhage (n=3), and diffuse axonal injury (n=3). Among the 46 spine injuries, 32 (69.6%) were acute spinal fractures. Seven patients (4.9%) had clinically significant and persistent neurologic injuries. One patient (0.7%) died, and 3 patients had severe TBIs.  Adult patients evaluated in the ED after motocross trauma had high rates of head and spine injuries with considerable morbidity and mortality. Almost half had head or spine injuries (or both), with permanent impairment for nearly 5% and death for 0.7%.]]></description>
      <pubDate>Thu, 26 Oct 2017 17:16:29 GMT</pubDate>
      <guid>https://trid.trb.org/View/1486457</guid>
    </item>
    <item>
      <title>Physiological Characteristics of Top Level Off-Road Motorcyclists</title>
      <link>https://trid.trb.org/View/772769</link>
      <description><![CDATA[This article reports on a study that analyzed the physiological characteristics of top level off-road motocross, enduro, and desert rally motorcyclists to facilitate the design of a specific training program.  The study included 27 off-road, top level riders and measured their anthropometric data, maximum aerobic power, isokinetic dynamometry of the knee and elbo, handgrip strength, heart rate, and blood lactate concentrations during competition.  The results showed the physical demands of the various races appear to influence the development of distinct musculoskeletal characteristics, as well as aerobic and anaerobic metabolism.  Motocross riders have more muscle mass, higher isokinetic handgrip strength, and greater aerobic power than eduro and desert rally drivers.  Desert rally riders tend to be overweight with maximum aerobic power similar to that of healthy individuals.  The authors conclude that the mechanical characteristics of the motorcycle and the technical and tactical skills of the riders seem to be more important for race success than the metabolic capabilities of the rider.]]></description>
      <pubDate>Tue, 31 Jan 2006 10:17:51 GMT</pubDate>
      <guid>https://trid.trb.org/View/772769</guid>
    </item>
  </channel>
</rss>