01172539

Component

https://doi.org/10.3141/2159-10

http://scholar.google.com...rkan&publication_year=2010

Railroads are increasingly using new technologies to improve capacity and operating efficiency. To plan their investments and prepare for the implementation of these technologies, railroads must understand their net effect on operations. This requires understanding both the particular aspects of these technologies that affect capacity and the characteristics of the systems into which they are being introduced. Two important technologies in this regard are communications-based train control (CBTC) [often referred to as positive train contro (PTC) in the United States] and electronically controlled pneumatic (ECP) brakes. Each element of CBTC and ECP brakes with the potential to affect capacity was identified, and its effect under various implementation scenarios was evaluated. The potential impact of each element was assessed and compared with the various baseline conditions and conventional technologies to understand the incremental effect. An extensive review of the literature on the subject was conducted in support of these evaluations. CBTC implementation with enforcement braking will generally result in a loss of capacity, but as these systems become more fully integrated, the potential for capacity enhancement improves. ECP brakes will provide benefits under most operational scenarios because of the shorter braking distances and thus the potential for the closer spacing of trains. The two technologies have a potential interactive effect: CBTC may make it possible to more effectively take advantage of one of the principal benefits of ECP brakes: shorter stopping distances. The results for either technology will be route and network specific, so individual railroads will need to conduct analyses to understand the net effect on the capacity of their systems.

01172542

10-2848

English

pp 77-84

2010

Transportation Research Record: Journal of the Transportation Research Board

9780309142861

Print

Figures (1) ; References (40)

Impact studies; Literature reviews; Positive train control; Technological innovations

Electronically controlled pneumatic brakes

Railroad capacity

Planning and Forecasting; Railroads; Vehicles and Equipment; I72: Traffic and Transport Planning; I90: Vehicles

TRIS, TRB, ATRI

Sep 13 2010 9:51AM

• Application of Postassessment of Kyushy Shinkansen Network to Proposed U.S. High-Speed Railway Project
• Deploying Business Logic for Railway Infrastructure Charging
• Effect of Train Speed on Risk Analysis of Transporting Hazardous Materials by Rail
• Energy Consumption and Emissions of High-Speed Trains
• Force Characteristics of Longitudinally Coupled Slab Track Turnout on Bridges Under Temperature Action
• Genetic Algorithm–Based Column Generation Approach to Passenger Rail Crew Scheduling
• High-Speed Rail Project Development Processes in the United States and China
• New Approach to Appraisal of Rail Freight Projects in South Korea: Using the Value of Freight Transit Time Savings
• Nondestructive Identification of Freezing-Induced Cracks in Concrete Sleepers of High-Speed Railways in South Korea
• Optimizing Train Network Routing with Heterogeneous Traffic
• Privatization Versus Public Works for High-Speed Rail Projects
• Railroad Ballast Evaluation Using Ground-Penetrating Radar: Laboratory Investigation and Field Validation
• Stress Dependence of Ultrasonic Guided Waves in Rails