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From June 12, 2013, to July 31, 2017, the Federal Railroad Administration funded the development of the Train Energy and Dynamics Simulator (TEDS) software by Sharma & Associates, Inc. (SA) to study train operation safety and performance as affected by equipment, train...
This research develops a cyber security risk analysis methodology for communications-based connected railroad technologies. The methodology can be tailored to specific use cases and system designs. By implementing the methodological framework, the study can identify potential cyber attack...
The Train Energy and Dynamics Simulator (TEDS) is simulation software, funded by the Federal Railroad Administration (FRA) and developed by Sharma & Associates, Inc. (SA), to study train operation safety and performance as affected by equipment, train makeup, train handling, track conditions...
This study describes in general terms the present status of grade crossing inventories, improvement programs and other significant considerations. It identifies available information with respect to the cost of accidents and motor vehicle operations, as well as the preparation of estimates of...
The constraints on innovative grade crossing protective systems are delineated and guidelines for development indicated. Inventory data has been arranged to permit an estimate of the classes of systems needed, the allowable costs, and contribution of various types of crossings to accidents. Many...
A field demonstration study in support of the evaluation of alternative railway-highway grade crossing accident countermeasures was conducted. Guidelines were provided for the development of countermeasure concepts, the selection of candidate countermeasures, countermeasures evaluation methods,...
This report is a preliminary examination of special aspects of grade crossing protection for operation of high-speed passenger trains in rail corridors for which complete grade separation is not possible. Overall system needs and constraints are indicated, and their implications examined....
The report describes a study of the most effective and practical means of enhancing the conspicuity of the trailing end of trains, in order to reduce the possibility of train--train collisions. There are five elements: (a) Definition of a usable number of categories of target, background, and...
This report summarizes a comprehensive study of potential means of reducing the probability of train-motor vehicle collisions at railroad-highway grade crossings through enhancement of the visual conspicuity of locomotives. Passive techniques are reviewed, and requirements and constraints upon...
Flashing xenon strobe lamps were installed on locomotives in revenue service as a means of alerting motorists to the hazards they are approaching at a rail-highway grade crossing. Effectiveness of these lights in attracting motorists’ attention was evaluated. The reactions of both motorists and...