M. Dingler

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Class 1 railroads are expected to face increasing capacity constraints due to long-term projections of growth in both freight and passenger traffic. To prepare for this growth and to strategically determine the best capacity expansion projects the Class 1 railroads make extensive use of a simulation tool known as Rail Traffic Controller (RTC). This tool can(More)
intermodal, manifest, unit, and local trains may all share trackage. Some lines also have intercity passenger trains, and in metropolitan regions, commuter trains. Each of these train types can have considerably different characteristics, and even trains of the same class may have varying weights and lengths. This heterogeneity has a substantial effect on(More)
North American heavy haul railroads are experiencing growth in traffic demand and increasingly facing capacity constraints. A key factor influencing railroad operations is heterogeneity in train characteristics. Different train types can have substantially different operating characteristics including maximum speed, power-to-ton ratio and dispatching(More)
North American railroads are experiencing growth in traffic demand and increasingly need to expand capacity on their lines; this will require changes in the mode of operation and infrastructure. Infrastructure expansion requires long lead times and is capital-intensive. Alternatively, some additional capacity may be achieved by alteration of the mode of(More)
North American railroads are experiencing rapid growth in traffic demand and increasingly need to expand capacity to accommodate it. Efficient planning of new capacity requires understanding how the mixture of traffic interacts to affect capacity. Different freight and passenger trains have substantially different operating characteristics including speed,(More)
of the factors that affect rail capacity and the options available to improve it cost-effectively is important. Infrastructure expansion will undoubtedly play an important role in accommodating new traffic demand; however, two new technologies that will also affect rail capacity are being introduced: communications-based train control (CBTC) [often referred(More)
Long-term demand for freight and passenger rail traffic in North America is expected to expand increasingly leading to capacity constraints. Both infrastructure investment and operational changes can relieve congestion. However, given the high cost to build and maintain infrastructure, careful consideration of how operational practices can affect or(More)
Railroads are expected to face capacity constraints due to longer-term prospects for substantial growth in both freight and passenger traffic. To prepare for this, railroads need to understand the factors that affect rail capacity and the options to cost-effectively improve it. Two technologies that have been touted as beneficial to capacity are(More)
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