Capacity Modeling Guidebook for Shared-Use Passenger and Freight Rail Operations (2014) / Chapter Skim
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Pages 77-80
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From page 77... ...
77 A.1 Introduction Railroads are unique in the transportation industry in that they operate a substantial portion of their networks with vehicles simultaneously moving in both directions on a single line. To use a highway analogy, this would be like cars moving in opposite directions on a single lane road, with the need to determine how they pass each other when moving in opposite directions and how a faster car can pass a slower car moving in the same direction.
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From page 78... ...
78 Capacity Modeling Guidebook for Shared-Use Passenger and Freight Rail Operations A.3 Double Track Operations A double track rail line is similar to a two-lane highway. Trains moving on double track lines generally stay to the right, and they typically follow one another at a common speed since it is difficult to overtake a slower train by running on the "left hand" track.
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From page 79... ...
Discussion of Train Prioritization and Effect on Line Capacity 79 overtake one another. Crossover speed limits depend on the switch angle, and crossover moves often take place at reduced speed.
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From page 80... ...
80 Capacity Modeling Guidebook for Shared-Use Passenger and Freight Rail Operations The practice of minimizing preferential treatment for certain trains helps to create fluidity throughout the rail system, thereby benefiting trains of all types. When there is moderate or heavy traffic on a route, railroads can generally make the best use of the physical plant by moving trains in order of departure at similar rates of speed.
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