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Research Reports
Filter by Keyword62 report(s) found with evaluation in the keywords field Fluctuation in temperatures significantly affects pavement stability and the selection of asphalt grading to be used in pavements. Ability to accurately predict the asphalt pavement temperature at different depths and horizontal locations based on ambient air temperatures will greatly help pavement engineers... This study provides a theoretical evaluation of Transit Signal Priority (TSP) strategies in small-medium size areas to alleviate missed connections, enhance service, and attract more transit riders. Several scenarios are evaluated, involving two TSP strategies; existing and reduced bus headways; and... This research examines a range of incident detection technologies to determine a recommended combination of approaches for use in the Utah Department of Transportation (UDOT) Advanced Traffic Management System (ATMS). The technologies that were examined are computer-based Automatic Incident Detection... The objectives of this research were to determine if fly ash has an effect on the field performance of cement-treated bases, determine if cement-treated bases perform similarly to other base types, and develop pavement performance models for interstate and non-interstate roadways in the state of Wyoming. This report contains a brief description of Intelligent Transportation Systems (ITS) and ITS technologies for Commercial Vehicle Operations (ITS/CVO). Second, it discusses previous literature regarding benefits of ITS/CVO for motor carriers, as well as managing the change due to technology. In addition... While SafeStat was designed to prioritize carriers for monitoring and compliance reviews, the ISS was designed to prioritize carriers for roadside inspection. However, both algorithms use similar data to define a relatively unsafe carrier. It would be beneficial if there could be one uniform motor carrier... Six major railroads provided the Transportation Technology Center Inc. (TTCI) with defective rail that had been removed from service. The rail, which contained a variety of defects, was placed into a gauntlet track at the Transportation Technology Center (TTC). This paper is the assessment of those six... The Americans with Disabilities Act (ADA) of 1990 included a requirement that public entities operating fixed route transportation services for the general public also must provide complementary paratransit service to persons unable to use the fixed route system. When this service is required, the ADA... This report examines the feasibility of using the thermal stress restrained specimen test to evaluate low temperature cracking in asphalt pavement mixes. Data were collected from laboratory and field evaluations. Various mixing, aging, and compaction methods were used to prepare test samples with materials... This project evaluated the opinions of commercial vehicle drivers and safety inspectors regarding the roadside inspection process and motor carrier safety. Surveys were developed in cooperation with the Office of Motor Carriers and used to question a representative sample from each of the groups nationwide.... |
