NEW YORK (CBSNewYork) – New York can be a dirty place, but when it comes to the subway, a recently released study shows cars on the R line are the dirtiest.

The survey, conducted by the Straphangers Campaign, showed that subway car cleanliness overall has declined since 2009.

This year, the R line’s rating was the worst with only 27 percent of its cars deemed “clean”. That’s down from 39 percent two years ago.

While five of the subway lines got worse, one did improve while 14 others stayed about the same.

So what line is the cleanest? The 7 according to the study, with 68 percent of its cars rated clean.

The study took place over a two month period when over 2,000 observations of the subways are made.

Do you agree with study? Sound off below…

Watch & Listen LIVE