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Both subway and elevated train systems provided mass transit and promoted growth within cities. The first subway system was completed in London in 1863, while the first elevated train system was built in Chicago in 1895. Subway systems provide fast travel without disturbing traffic. Elevated train systems are cheaper than subways, but can be unattractive and noisy. Both systems gave citizens a faster way to travel from place to place without dealing with surface streets.
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More commuters could travel faster between Woodland Hills and downtown Los Angeles on a subway than on an elevated railway above the Ventura and Hollywood freeways, according to a study made public Monday.
On the other hand, the elevated line--carrying futuristic monorail trains or trains riding on electromagnetic fields--could be built much more quickly and inexpensively, said the report prepared for the Los Angeles County Transportation Commission.