Since Citi Bike launched in New York City in 2013, the service has faced criticism for not serving wide swaths of the city. Now, a new report has laid out the stark disparity—in incomes, of the bike-sharing system’s areas of coverage, six years after it launched.

The report, commissioned by New York Communities for Change and carried out by the McGill University School of Urban Planning, compares publicly available data on Citi Bike locations (as well as subway stations) throughout the five boroughs with demographic data—median income, race, and access to education. Its findings, first reported in the New York Daily News, likely won’t surprise regular Citi Bike users: The bike-sharing system overwhelmingly serves New Yorkers who are white, wealthy, educated, and already have access to other transit options.

Specifically, the median household income of city residents who live close to Citi Bike docks is $90,400, while those who do not have a median household income of $54,700. Only 15.9 percent of New Yorkers living in poverty have access to bike-sharing; the figure goes up slightly, to 16.5 percent, when looking at New Yorkers of color. And nearly 30 percent of city denizens have no access to either bike-sharing systems or the subway.

“Bike sharing can be a powerful way to improve the mobility options of socially disadvantaged communities who struggle to afford car ownership and don’t have reliable subway access. Unfortunately, our analysis finds that the Citi Bike system in New York fails to live up to this promise,” David Wachsmuth, a professor at McGill and the report’s author, said in a statement. “It serves a population which is already extremely privileged, and since the Citi Bike network opened in 2013, the situation has barely improved. New Yorkers deserve a more equity-focused bike sharing system, which would serve a much more diverse set of communities than the existing system.”

The report also notes that this problem is not exclusive to New York City; studies show that “fewer than one-quarter of bike sharing stations across the U.S. are located in communities with economic hardship,” according to the McGill report. Studies have shown that in addition to lack of access, communities facing hardship often aren’t aware of programs that make bike-sharing more affordable, for example.

So how can this be redressed? The report has two recommendations: Adding more docks in areas with “high social vulnerability,” and targeting areas with limited access to transit. It zeroed in on 11 specific neighborhoods, which include the South Bronx, Brownsville, Jackson Heights/Flushing, Far Rockaway, and Sunset Park.

“This report confirms that as a city we must ensure that we expand Citi Bike and other bike sharing programs to the outer-boroughs,” Ydanis Rodriguez, the chair of the City Council’s transportation committee, said in a statement. “The Citi Bike program has provided hundreds of thousands of New Yorkers with an efficient, reliable, and safe alternative form of transportation. Our work must continue, we need to expedite the bike sharing expansion, ensuring that these services can benefit all New Yorkers living in transit deserts and low income communities”

For its part, Citi Bike says it’s working toward that expansion—thanks to a $100 million cash infusion from Lyft, which now owns the bike-sharing system’s parent company, it will nearly double its area of coverage in the near future.

“Ensuring that diverse communities have access to Citi Bike is central to our mission,” a Citi Bike spokesperson said in a statement to Curbed. “From Bed-Stuy to Harlem, there are thousands of public housing residents and low-income New Yorkers who have joined Citi Bike for only $5 a month. And as we expand significantly in the near future, we will reach many more neighborhoods and continue our focus on bikeshare equity.”

Citi Bike is due to expand the areas it covers in New York City by 35 square miles, although where those docks will end up specifically has yet to be determined by the company and the city’s Department of Transportation. That agency says its initial roll-out, in densely populated areas of Manhattan and Brooklyn, was “operationally important,” but it’s looking to farther-flung areas in the future—particularly with its dockless bike share pilots, in which DOT worked with operators who are not Citi Bike.

“We look forward to the forthcoming expansion of Citi Bike, bringing additional geographic and demographic diversity to its coverage area and ridership,” a spokesperson for DOT told Curbed. “This follows expansion in recent years into communities such Harlem, Bushwick, and Red Hook as well as a dockless bike pilot in the Bronx.”