A swath of the Great White Way will become a pedestrian plaza in May as part of New York City's efforts to reduce traffic and pollution.

It's an experiment that — if successful — could become permanent.

In July, the city designated two lanes of Broadway for bikes and a public esplanade between 42nd and 35th streets.

Now the concept will be taken a step further: closing Broadway to vehicles between 42nd and 47th streets, and between 33rd and 35th streets.

The plan will provide extra ambiance for outdoorsy types, including cafe tables and benches.

Traffic still will be allowed on the cross streets. Seventh Avenue will be widened to accommodate the extra traffic from the closed section of Broadway.