Buses have been rolling down the streets of New York City for decades.

And while the models and the routes may have changed over the years, the fact remains that buses are an integral part of the city's transit system.

Take a look at some of the older buses that once graced the streets of New York City.

Older buses were reintroduced to New York City
Older buses were reintroduced to New York City streets after all Grumman Flxible buses were pulled by the Transit Authority on Feb. 8, 1984, due to repeated mechanical difficulties. (Credit: Newsday / David Pokress)
A bus lets passengers board in a Fifth
A bus lets passengers board in a Fifth Avenue bus lane dedicated by Mayor Ed Koch that morning, on June 16, 1983. (Credit: Newsday / Dan Neville )
Passenger vans illegally block the bus stop near
Passenger vans illegally block the bus stop near the Archer Avenue subway station in Jamaica, Queens, on Nov. 24, 1991. (Credit: Newsday / Jonathan Fine)

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It's standing room only on the M32 bus
It's standing room only on the M32 bus as it travels from Kew Gardens, Queens, to Manhattan on Dec. 9, 1985. (Credit: Newsday / Alan Raia)
The Green Bus Lines Q60 drives down Queens
The Green Bus Lines Q60 drives down Queens Boulevard on March 17, 1987. (Credit: Newsday / Oliver S. Morris )
Passengers board a Queens Transit Q65 bus on
Passengers board a Queens Transit Q65 bus on the corner of Main Street and Roosevelt Avenue in Flushing on March 29, 1982. (Credit: Newsday / Dan Neville)
Commuters get off of the Q36 bus and
Commuters get off of the Q36 bus and head toward the subway at Hillside Avenue and 180th Street in Jamaica, Queens, on Dec. 15, 1980. (Credit: Newsday / Dick Kraus)
A Q17A bus rounds a curve on 65th
A Q17A bus rounds a curve on 65th Avenue and Douglaston Parkway in Little Neck, Queens, on Nov. 8, 1979. (Credit: Newsday / Dan Neville)

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A bus waits at the 222nd Street terminal
A bus waits at the 222nd Street terminal in Queens Village on April 25, 1978. (Credit: Newsday / Dan Neville)
A Green Bus Lines bus returns to its
A Green Bus Lines bus returns to its route on Jamaica Avenue and 150th Street in Queens on Nov. 18, 1979, following a worker strike. (Credit: Newsday / Karen Wiles Stabile)
A Steinway bus at Rikers Island prison on
A Steinway bus at Rikers Island prison on Oct. 13, 1981. (Credit: Newsday / John H. Cornell Jr.)
A bus driver waits at a layover stop
A bus driver waits at a layover stop at Springfield Boulevard and Jamaica Avenue in Queens Village on April 25, 1978. (Credit: Newsday / Dan Neville)
Surface line dispatcher Marvin Douglas, of Jamaica, Queens,
Surface line dispatcher Marvin Douglas, of Jamaica, Queens, keeps in radio contact with buses in Flushing, Jamaica and Queens Village at the Transit Authority building in East New York, Brooklyn, on April 18, 1979. (Credit: Newsday / John H. Cornell Jr.)

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People in front of the Plaza Hotel in
People in front of the Plaza Hotel in Manhattan check out a line of new Japanese buses being tested by the city on May 6, 1981. (Credit: Newsday / Bill Senft)