Police said an argument turned physical at 3:16 a.m. on July 27.
The cyclist hit the bus near the intersection of Driggs Avenue and South Fifth Street, police said.
The M23 bus driver was treated for burns at an area hospital after the Flatiron attack, police said.
Commuters said the M98's scheduled buses are often very late or never arrive at all.
The MTA's etiquette ad campaign expanded from the subway to the bus system on March 1, 2015.
Police believe the victim was not the intended target of the Thursday afternoon shooting.
The shooting was one of three that occurred within 12 hours in the neighborhood Tuesday and Wednesday.
Seven people were seriously injured in an MTA bus crash near Astoria Park on Monday.
The "bus cam" at Surfside Bagels helps commuters who were missing the bus while getting bagels.
Gertrude Schnabel, 84, lost part of her leg crossing Queens Bouelvard on Jan. 15.
A woman was hit while crossing the intersection of Queens Boulevard and 108th Street Wednesday.
Mauricio Galdamez died after running into an MTA bus in Oakland Gardens, cops said.
Boris Kiderman, 80, was killed by a bus at Third Avenue and East 20th Street.
Michael Pratt, 25, hit the back of a bus in East Flatbush and died early Thursday, cops said.
The crash happened at Parsons Boulevard and Archer Avenue in Queens.
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