Search results
Results from the WOW.Com Content Network
Examples of single line tokens: Tablet on left, key token on right. The operation of a bidirectional single track line has the hazard of two trains colliding. The simplest way to prevent such collisions is to have only one train in the section at any given time. Such a system is known as "one-engine-in-steam” (OES) or “one-train working ...
Automatic block signaling (ABS), spelled automatic block signalling or called track circuit block (TCB [1]) in the UK, is a railroad communications system that consists of a series of signals that divide a railway line into a series of sections, called blocks. The system controls the movement of trains between the blocks using automatic signals.
A torpedo on a rail A detonator on a railway line in Belgium South African example. Typical uses of detonators include: A warning, caution or stop signal in dense fog, when signals are difficult to see; A warning of a train stopped on the line ahead by an incident or accident—the train crew are usually responsible for placing the detonators
The main line, or mainline in American English, of a railway is a track that is used for through trains or is the principal artery of the system [1] [2] [3] from which branch lines, yards, sidings, and spurs are connected.
The Philadelphia Main Line, known simply as the Main Line, is an informally delineated historical and social region of suburban Philadelphia, Pennsylvania. Lying along the former Pennsylvania Railroad 's once prestigious Main Line , it runs northwest from Center City Philadelphia parallel to Philadelphia and Lancaster Turnpike , also known as U ...
The line from the intermediate block home signal to the home signal of the next signal box on the same line in the same direction of travel is the absolute block section. To clear the intermediate block home signal a "line clear" is required from the signal box in advance.
The Blue Line light-rail extension between downtown Minneapolis and Brooklyn Park will cost between $2.9 billion and $3.2 billion, according to a new estimate released Wednesday. "My view is that ...
Simple pole blockage principle. Pole blockages [1] [2] or pile barrages, [3] [4] among other names (see § Terminology), are underwater barricades or barrages for coastal defence, constructed out of piling, vertical poles or stakes driven into the bed of a waterway, up to, or above the water line, blocking watercraft from crossing over, negating passage.