The District is adding nine new locations for speed cameras, and the move is being criticized by the American Automobile Association.
AAA has designated Washington a "strict enforcement area" and warns drivers to slow down in the city.
This is the second time in three months that the city has expanded the speed camera program.
"It's amazing that one minute Police Chief Cathy Lanier is reminding us how safe the city is, how fatalities have dropped, but then adds 28 new speed camera sites this year alone," said AAA's Lon Anderson.
Lanier responded to the criticism saying she finds it "astounding that AAA Mid-Atlantic would criticize a program that has been successful in reducing traffic deaths."
Lanier said the District appreciates the designation as "strict enforcement area" because it encourages drivers to slow down and obey traffic laws.
Anderson said the speed cameras are more a source for revenue than a safety tool. He cites a study by Howard University that finds motorists are obeying speed limits in almost 70 percent of the monitored locations across the city where speed cameras and radar guns are not in use.
The new locations are: