It’s not your imagination. Your Metro train is slowing down.

As of Sept. 13, here are all the spots within the Metrorail system where speed restrictions are currently in place. (WMATA)

If your Metro rides feels a little sluggish these days, it’s not your imagination.  As Tuesday of afternoon, speed restrictions were in place in at least 22 sections of rail throughout the system– most of which haven’t been announced.

We’ve written about a few of these, but after hearing from some riders who said it seemed that their trains were going slower than usual, my colleague Faiz Siddiqui asked Metro for a list of all the speed restrictions currently in place. In response, Metro tweeted out the above chart.

Metro puts speed restrictions in place for a variety of reasons. Most riders may be familiar with this concept during hot summer days when Metro slows down trains because of concerns about the impact of heat on tracks.

On Monday, Metro announced speed restrictions on the Blue Line between Franconia-Springfield and Van Dorn Street, and on the Blue and Yellow lines between King Street and Braddock Road. Trains have been slowed to 15 mph because of the condition of the rail ties. The restrictions are expected to be in place for seven to 10 days.

Last week, Metro announced speed restrictions for outbound trains near the Rhode Island Avenue station. Those speed restrictions were put into place because of concerns about debris falling from the ceiling at the station. Consultants brought in to examine the station’s aerial structure concluded that it is safe for trains, but officials think speed restrictions will help reduce stress on the structure until repairs can be made, most likely during Safe Track Surge #10, which involves a 23-day shutdown between Fort Totten and NoMa-Gallaudet beginning Oct. 10.

It’s not clear how long the other slowdowns will be in place, but we have asked Metro and will update as we find out more information.