Regulations governing the sale of artworks and books in New York City parks do not violate the First Amendment, the U.S. Court of Appeals for the Second Circuit ruled Wednesday.

The circuit said that regulations passed in 2010 to deal with an increase in vendors selling “expressive matter” in Union Square, parts of Central Park and other busy parklands are valid, content-neutral time, place and manner restrictions that do not run afoul of the right to free speech.