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Rodger J. Koppa
Researcher at Texas A&M University
Publications - 29
Citations - 582
Rodger J. Koppa is an academic researcher from Texas A&M University. The author has contributed to research in topics: Poison control & Stopping sight distance. The author has an hindex of 12, co-authored 29 publications receiving 546 citations. Previous affiliations of Rodger J. Koppa include Texas A&M University System & Texas A&M Transportation Institute.
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The effects of load knowledge on stresses at the lower back during lifting
TL;DR: The experienced lifters had lower stress levels at L4/L5 and utilized two technique strategies that were dependent upon the load knowledge condition, whereas the non-lifters used the same strategy f...
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Use of motor nerve conduction testing and vibration sensitivity testing as screening tools for carpal tunnel syndrome in industry
TL;DR: This investigation evaluated the use of two portable devices for measuring motor nerve conduction time and tactile sensitivity to 120 Hz vibration in a field setting and found the vibration threshold was higher in the carpal tunnel syndrome group than in the other groups; however, further examination of the data revealed no differences in threshold.
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Driver Inputs during Emergency or Extreme Vehicle Maneuvers
Rodger J. Koppa,Gordon G. Hayes +1 more
TL;DR: Four representative vehicles used in a previous open-loop comparative study were tested with a sampling of volunteers from the general public, and the degree to which this sampling of drivers utilized the full capabilities of the vehicles was determined.
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New Stopping Sight Distance Model for Use in Highway Geometric Design
TL;DR: In this article, a new model for determining stopping sight distance requirements for geometric design of highways is presented based on parameters describing driver and vehicle capabilities that can be validated with field data and defended as safe driving behavior.
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Measuring Driver Performance in Braking Maneuvers
TL;DR: In this article, a simple, reliable instrumentation package with an on-board computer for installation in a test vehicle or the test driver's own vehicle is described, which is used in a research project recently completed, an empirical investigation of stopping sight distance.