A quasi-moving block redundant non vital system model for conventional single line absolute block railway system

Karredla, Ganesh V.; Srinivas, Chodagam

doi:10.1109/isco.2014.7103931

Cited by 2 publications

(4 citation statements)

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“…Pan and Zheng used an empirical safe-following-distance formula to derive simple control laws sufficient for controlling identical trains that respond instantaneously on a flat track profile ( 22 ). Karredla and Srinivas proposed a quasi-moving-block system with an instantaneous spacing-distance formula and computed the steady-state capacity of the system ( 23 ). Liu proposed and evaluated a possible algorithm for European Train Control System (ETCS) Level 3 (moving block), finding that the range of stable parameters was relatively limited and varied with desired headway, concluding that proper train-following control parameters will be critical for the success of ETCS Level 3 ( 24 ).…”

Section: Objectives and Previous Researchmentioning

confidence: 99%

Comparing the Efficiency and Effectiveness of Different Train-Following Control Algorithms for Fleets of Heavy-Haul Freight Trains under Moving Blocks

Roscoe

Dick

2022

Transportation Research Record: Journal of the Transportation R

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With the nationwide installation of positive train control (PTC) technology recently completed, freight railroads are searching for ways to leverage the technology to improve their operations beyond increasing safety. One possibility is reducing train headways through developing and installing a PTC-based moving-block system, thus increasing the capacity of railroad mainlines without adding costly track infrastructure. Though operating trains at shorter headways can theoretically increase line capacity, effectively controlling following trains becomes more difficult compared with a fixed-block system, requiring a fast-reacting train crew or control algorithm that effectively minimizes headway and fuel consumption while attenuating all fluctuations in lead-train speed. Otherwise, rapid changes in throttle and brake settings may be required, reducing following-train fuel efficiency, generating in-train forces, and diminishing the expected capacity gains from shortened headways. This research, sponsored by the Federal Railroad Administration, aims to better understand how closely following freight trains respond to different throttle- and brake-control algorithms. Using insights from connected automobile and truck platooning technology, the project team developed several train-following control algorithms, analyzed their stability, and simulated their performance with fleets of freight trains subject to different speed profiles. While moving-block systems do require additional train spacing beyond the minimum safe braking distance to account for train control actions, effective train-following control algorithms can minimize this distance. Also, the developed control laws exhibit a trade-off between minimizing train headway and fuel consumption, potentially allowing railway operators to choose an optimal balance.

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Section: Objectives and Previous Researchmentioning

confidence: 99%

Comparing the Efficiency and Effectiveness of Different Train-Following Control Algorithms for Fleets of Heavy-Haul Freight Trains under Moving Blocks

Roscoe

Dick

2022

Transportation Research Record: Journal of the Transportation R

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“…Podbrezová railway station is on the 55.139-kilometer railway line of the Banská Bystrica railway line. e railway line was put into operation on July 26, 1884, and the building of the current railway station was opened in 1912 [18]. For a better overview of readers, Figure 1 shows its location within Slovakia.…”

Section: Research Backgroundmentioning

confidence: 99%

“…e siding of the Železiarne Podbrezová company opens into the Podbrezová railway station [18]. It is one of the largest processors of metallurgical products in Slovakia.…”

Section: Research Backgroundmentioning

confidence: 99%

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Impact of Change of the Interlocking on the Acceleration of Railway Transport: A Case Study from the Podbrezová Railway Station

Šperka

Valla

Nedeliaková

et al. 2022

Journal of Advanced Transportation

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Accelerating rail transport is a key factor in improving the quality of passenger and freight transport. The main research question of the article asks whether it is possible to increase the speed due to the change in the interlocking. The main research tool is a comparison of the interval of crossing before and after the reconstruction of the interlocking. As the entire research is carried out on a single-track line at the Podbrezová station, the interval of crossing is the most relevant indicator. An associated goal of the entire research is to point out a possible increase in the carrying out of station tracks and an overall improvement in the working conditions of operational staff (station inspectors and switchmen).

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A quasi-moving block redundant non vital system model for conventional single line absolute block railway system

Cited by 2 publications

References 4 publications

Comparing the Efficiency and Effectiveness of Different Train-Following Control Algorithms for Fleets of Heavy-Haul Freight Trains under Moving Blocks

Comparing the Efficiency and Effectiveness of Different Train-Following Control Algorithms for Fleets of Heavy-Haul Freight Trains under Moving Blocks

Impact of Change of the Interlocking on the Acceleration of Railway Transport: A Case Study from the Podbrezová Railway Station

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