Streetcars or trolley(car)s (North American English for the European word tram) were once the chief mode of public transit in hundreds of North American cities and towns. Most of the original urban streetcar systems were either dismantled in the mid-20th century or converted to other modes of operation, such as light rail. Today, only Toronto still operates a streetcar network essentially unchanged in layout and mode of operation.
Older surviving lines and systems in Boston, Cleveland, Mexico City, Newark, Philadelphia, Pittsburgh, and San Francisco were often infrastructure-heavy systems with tunnels, dedicated right-of-way, and long travel distances. Most of these older streetcar systems are largely rebuilt as light rail systems. About 22 North American cities, starting with Edmonton, Calgary and San Diego, have installed new light rail systems, some of which run along historic streetcar corridors. A few recent cases feature mixed-traffic street-running operation like a streetcar. Portland, Oregon, Seattle, and Salt Lake City have built both modern light rail and modern streetcar systems, while Tucson, Oklahoma City and Atlanta have built new modern streetcar lines. A few other cities and towns have restored a small number of lines to run heritage streetcars either for public transit or for tourists; many are inspired by New Orleans' St. Charles Streetcar Line, generally viewed as the world's oldest continuously operating streetcar line.
History
Omnibuses and horsecars
From the 1820s to the 1880s urban transit in North America began when horse-drawn omnibus lines started to operate along city streets. Examples included Gilbert Vanderwerken's 1826 omnibus service in Newark, New Jersey. Before long Omnibus companies sought to boost profitability of their wagons by increasing ridership along their lines. Horsecar lines simply ran wagons along rails set in a city street instead of on the unpaved street surface as the omnibus lines used. When a wagon was drawn upon rails the rolling resistance of the vehicle was lowered and the average speed was increased.
A horse or team that rode along rails could carry more fare paying passengers per day of operation than those that did not have rails. North America's first streetcar lines opened in 1832 from downtown New York City to Harlem by the New York and Harlem Railroad, in 1834 in New Orleans, and in 1849 in Toronto along the Williams Omnibus Bus Line.
These streetcars used horses and sometimes mules. Mules were thought to give
more hours per day of useful transit service than horses and were especially popular in the south in cities such as New Orleans, Louisiana. In many cities, streetcars drawn by a single animal were known as "bobtail streetcars" whether mule-drawn or horse-drawn. By the mid-1880s, there were 415 street railway companies in the U.S. operating over of track and carrying 188 million passengers per year using animal-drawn cars. In the nineteenth century Mexico had streetcars in around 1,000 towns and many were animal-powered. The 1907 Anuario Estadístico lists 35 animal-powered streetcar lines in Veracruz state, 80 in Guanajuato, and 300 lines in Yucatán.
Although most animal-drawn lines were shut down in the 19th century, a few lines lasted into the 20th century and later. Toronto's horse-drawn streetcar operations ended in 1891. New York City saw regular horsecar service last until 1917. In Pittsburgh, Pennsylvania, the Sarah Street line lasted until 1923. The last regular mule-drawn cars in the United States ran in Sulphur Rock, Arkansas, until 1926 and were commemorated by a U.S. Postage Stamp issued in 1983. The last mule tram service in Mexico City ended in 1932, and a mule-powered line in Celaya, survived until May 1954.
In the 21st century, horsecars are still used to take visitors along the tour of the 3 cenotes from Chunkanán near Cuzamá Municipality in the state of Yucatán. Disneyland theme park in Anaheim, Cal., has operated a short horsecar line since it opened in July 1955. Similarly, Disney World theme park in Orlando has operated a short horsecar line since it opened in Oct 1971. At both parks, they run from 8-9am to 1:30-2pm, and, depending on the season, sometimes 5-7pm.