To search an exact document title or key phrase, place quotations around the text. Example: "U.S. Government Grade Crossing Research & Stakeholder Engagement" Entering keywords without quotations will search the eLibrary for all occurrences of the keywords.
Keywords: Buy America MTA PTC Positive Train Control RRIF
A Radar Vehicle Detection System for Four-Quadrant Gate Warning Systems and Blocked Crossing Detection
Keywords: Microwave radar, vehicle detection, Wavetronix, four-quadrant gate, blocked railroad crossing, exit gates, obstacle detection, IODS, island radar,
Abstract: This report compares two vehicle detection technologies for grade crossings. Findings suggest radar detection is a cost-effective replacement for ground-based sensors.
This report compares two vehicle detection technologies for grade crossings. Findings suggest radar detection is a cost-effective replacement for ground-based sensors.
Keywords: Transverse cracks; ultrasonic guided waves; noncontact ultrasonic testing; laser ultrasonic; air-coupled sensors; finite element modeling; automatic defect classification
Abstract: The objectives of this project were (1) to improve the defect detection reliability and (2) to improve the inspection speed of conventional rail defect detection methods. The...