Railroads

Researchers developed new concepts of train control systems that could potentially offset the negative impacts to train operations introduced by the current implementation of PTC (Overlay PTC). They investigated the effects on railroad network operation caused by the operation of PTC, such as...

Analysis of the Practical Implementation of an Adaptive Braking Enforcement Algorithm

Engineers identified potential hazards associated with the use of an adaptive braking enforcement algorithm, quantified risks, and determined potential risk reduction strategies. This report describes the work performed to address the potential causes of safety hazards that differ between...

Leveraging Connected Highway Vehicle Platooning Technology to Improve the Efficiency and Effectiveness of Train Fleeting under Moving Blocks

Future advanced Positive Train Control systems may allow North American railroads to introduce moving blocks with shorter train headways. This research examines how closely following trains respond to different throttle and brake inputs. Using insights from connected automobile and truck...