Rail sense plan

Railway or railroad track consists of two parallel rail tracks, formerly of iron now of steel, generally mounted upon cross beams termed sleepers Commonwealth or railroad ties of timber, concrete or steel. The underlying support maintains the rails at a fixed distance apart. Usually vehicles running on the rails are arranged in a train a series of individual powered or empowered vehicles linked together. The cars which move with much less friction than on a road, and the locomotive that pulls the train use much less energy. The Rail transport is an energy efficient means of mechanized land transport. The rail tracks provide very smooth and hard surfaces on which the wheels of the train may roll with a minimum of friction. The Rail transport makes highly efficient use of space: a double-track rail line can carry more passengers or freight in a given amount of time than a four-lane road.

Safety and railway disaster:

The trains can travel at very high speed, are heavy, are unable to deviate from the track and require a great distance to stop. Possibilities for accidents include jumping the track (derailment), head-on collision with another train coming the opposite way and collision with an automobile at a level crossing also called a grade crossing. Rail operations also generate sound intensities capable of inducing noise health effects. The most important safety measure is railway signaling. The train whistles warn others of the presence of a train, trackside signals maintain the distances between trains. In Britain, vandalism is thought responsible for about half of rail accidents. In Urban, city, or town planning is the discipline of land use planning which deals with the physical, social, and economic development of metropolitan regions, municipalities and neighborhoods. The Other professions deal in more detail with a smaller scale of development, namely architecture, landscape architecture and urban design. The Regional planning deals with a still larger environment, at a less detailed level. Extreme weather, flood, or other emergencies can often be greatly mitigated with secure evacuation routes and emergency operations centers. These are relatively inexpensive and many consider them a reasonable precaution for any urban space. Many cities will also have planned, built safety features, such as levees, retaining walls, and shelters.

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