Trams or trolley has its origins in a horse-drawn tram roads were introduced in the United States a

Trams or trolley has its origins in a horse-drawn tram roads were introduced in the United States and European countries in the 1830s. A horse-drawn carriage on rails that can carry twice as many people for the same horsepower is known as "omnibuses" or trains which are open to any person (who pay the ticket) that runs on top of a dirt road or paved. By rail drive into finer and reduced friction. The first horse-drawn tram to replace omnibuses pagoaltoque in the United States was introduced in New York City in 1832, which is soon followed in many smaller cities pagoaltoque across the country. Similar route became popular in Paris in the 1850s and in the UK in the 1860's. In the 1870s, several cities experimented pagoaltoque with steam-driven system, but in general, the steam engine was too heavy for the tram track that has been installed it. One solution is successfully obtained, especially in hilly cities such as Seattle and San Francisco, is a cable car, which was found by Andrew S. Hallidie. Existing systems installed in San Francisco in 1873, and some of it still survive to the 21st century. Bell-ringing system for communication between pagoaltoque the guard and the guard door tickets are modeled on the same system that is used to communicate between the wheelhouse and the engine room early steamers. Cable cars run by a steam engine in its attractive cable under the track, which the trains will run at speeds approaching and fixed. The train will stop by releasing the cord and use the brakes. When the system is installed, an electric-powered rail road was first made, the first in the outskirts of the city of Berlin by Ernst Werner von Siemens (1812-1892), who demonstrated in 1879 and introduced in 1881. Siemens system first uses a metal rail to supply electric current and the other to restore rail electric current. This system soon proved to be dangerous, especially when passing vehicles or pedestrians that touch both rails simultaneously. Siemens system immediately replace it with a fish hook (fish rod)-type arrangement which will bring the electrical current from the wire that is placed on top of the train. This makes the coil called a trolley cart (trolley). The system was soon developed in the cities United States and Europe, quickly replace selebumnya tram pulled by horses. In the United States, Frank J. Sprague (1857-1934) developed a trolley pole which can rotate which made increasingly flexible tram at circular corners, with the first pair system in Richmond Virginia in 1888. Systems that use equipment Sprague growing rapidly in the early decades of the 20th century. In 1917 there were about 45,000 miles a tram track in the United States, and the passengers were taken over more and more and this track in 1919 until 1920. However, as the emerging and growing popularity of cars, trams, with the route that is specific and organized, became pagoaltoque bogged down in the urban traffic, and its use began to decrease. pagoaltoque Some of the tram track that supports the buildings in parks play in suburban areas to attract pagoaltoque visitors, and in many cities, where the tram track stretches into rural locations that encourage the development of trams in the suburbs be an early sign of change made cars. It is the basis of bourgeois suburban utopia. As a form of transportation in the early 20th century, the tram has become an icon for urban nostalgia.
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