Research Showcase, Spring 2009: Wind Resistant Signs and Signals, Cell Phones Help Special Needs Riders, New Simulator Training for Commercial Drivers and Safety Inspectors

NHTSA · 2009 · ROSA P / Florida. Department of Transportation

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Summary

The Florida Department of Transportation (FDOT) Research Showcase, Spring 2009, highlights four distinct research initiatives aimed at improving transportation infrastructure resilience, accessibility, and safety training. The publication addresses the need for wind-resistant traffic structures following severe storm damage, the development of assistive technology for transit riders with cognitive challenges, and the modernization of training programs for commercial drivers and safety inspectors. In the realm of infrastructure, researchers from the University of Florida, led by Ron Cook, investigated the structural failures of cantilevered sign poles and wire-suspended traffic signals caused by high-velocity winds. Field observations and testing revealed that sign pole failures were primarily due to concrete breakage around anchor bolts under torsional loads. To address this, the team developed a retrofit technique involving a fiber-reinforced polymer wrap around the concrete foundation, which eliminates the concrete base as the weakest link. For traffic signals, wind tunnel tests comparing dual-cable and single-cable suspension systems demonstrated that single-cable systems performed better structurally. While dual-cable systems suffered from high tension stresses in hangers and disconnect boxes, single-cable systems acted like pendulums without similar tension issues. The study concluded that single-cable systems are preferable, though dual-cable performance can be improved by replacing aluminum hangers with pipe hangers. To enhance transit accessibility, the Center for Urban Transportation Research at the University of South Florida developed a Travel Assistant Device (TAD). This cell phone-based application assists cognitively challenged riders in navigating bus systems independently. The software uses GPS and audible or vibrational alerts to guide users through necessary skills, such as pulling the signal cord at the correct stop. Caregivers can monitor the rider’s real-time location and receive alerts if the rider deviates from the planned route. Field tests in April 2008 showed that participants learned the system within hours. The technology offers significant cost savings for transit agencies by potentially reducing reliance on expensive paratransit services in favor of fixed-route transit. Finally, the Research in Advanced Performance Technology and Education Readiness (RAPTER) group at the University of Central Florida created computer-based training solutions to bridge the gap between traditional instruction and digitally native learners. The Virtual Check Ride System (VCRS) provides commercial drivers with simulation-based training for CDL recertification, including interactive truck inspections and driving skills tests. Additionally, a Web-based Safety Inspector Training and Certification Program utilizes high-fidelity images and animations to teach inspection criteria. This program was implemented in Florida, resulting in a 100% examination pass rate, and showed positive results in pilot tests in Colorado, Ohio, and Michigan. These initiatives collectively demonstrate how targeted research can improve infrastructure durability, expand mobility for special needs populations, and enhance workforce competency through modern educational technologies.

Key finding

The document serves as an informational newsletter summarizing multiple distinct research outcomes rather than presenting a single unified experimental result.

Methodology

review

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• simulator training transfer

Information type

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• Applied Guidance: countermeasure evaluation
• Methodological Resource: tool software, validation psychometrics