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11
Dec
2019
Technical Reports
Using an Unmanned Aerial Vehicle to Produce Accurate Grade Crossing Profile Data
Subject
Grade Crossing Technology,
Highway-Rail Grade Crossings
Keywords: Highway-rail, grade crossing, humped crossing, photogrammetry, LiDAR
Abstract: This study illustrated the use of unmanned aerial vehicles to measure and develop accurate 3D models of grade crossings at lower cost than LiDAR-based measurements.
Report Number
DOT/FRA/ORD-19/49
Office
RDI-23
11
Dec
2019
Technical Reports
Monitoring Engineer Fatigue (MEFA)
Subject
Human Factors
Keywords: MEFA, engineer fatigue, monitoring, CTIL, Volpe, eye tracking
Abstract: Aurora Flight Sciences, under contract to the Federal Railroad Administration, studied the feasibility of autonomously monitoring and combating train engineer fatigue. This...
Report Number
DOT/FRA/ORD-19/48
Office
RDI-24
2
Dec
2019
Technical Reports
Analysis of Non-Track-Circuit Highway-Rail Grade Crossing Train Detection Technologies
Subject
Grade Crossing Technology,
Highway-Rail Grade Crossings
Keywords: Highway-rail, grade crossing, accident prediction formula, acoustic train detection, fiber-Bragg grating, magnetometer, seismic train detection, track circuits, train detection, warning device effectiveness, warning device upgrade, wheel detectors, safety
Abstract: This study assessed whether devices that did not rely on track circuits to detect trains were suitable to deploy active warnings at grade crossings.
Report Number
DOT/FRA/ORD-19/47
Office
RDI-23
8
Oct
2019
Technical Reports
Acoustical Warning Devices as Emergency Warning Systems, Phase 1
Subject
Emergency Notification Systems,
Grade Crossing Technology
Keywords: Emergency warning, train horn, trespassers, music masking sounds, reaction time, acoustic warning device
Abstract: Acoustical warning devices are designed to warn trespassers of an approaching train. This study evaluated the urgency and detectibility of potential warning sounds.
Report Number
DOT/FRA/ORD-19/40
Office
RDI-23
27
Sep
2019
Technical Reports
Why Do Passenger Trains Run through Switches in the Rail Yard?
Subject
Human Factors
Keywords: Run through switch, switch points, yard crews, passenger rail, systems-theoretic process analysis, STPA, STAMP, systems-theoretic accident model and processes
Abstract: This study examined why crews working in yard operations run through switches in the wrong direction or run through damaged switches. Running through a switch in the wrong...
Report Number
DOT/FRA/ORD-19/37
Office
RDI-24