Hundreds of thousands of people will flood the streets of Washington, D.C. Friday for President-elect Donald Trump’s inauguration ceremony, which is sure to cause a traffic jam or two. Folks hopping around the city will be able to use D.C.’s Metrorail. However, inauguration travelers should expect some delays and closures.

The Metrorail will run from 4 a.m. until midnight on Friday. From opening until 9 p.m., the subway system will operate on a rush-hour service schedule, according to the MTA’s official inauguration guide. Peak fares are expected to be in effect during that time.

The Metrobus will operate on a Saturday Supplemental service schedule, so travelers should expect to see additional stops added to the Metrobus’ route, as well as detours near the National Mall area, where the biggest crowds are expected to be during Trump’s swearing in ceremony.

The Metro will not be in service at several stations on Inauguration Day, including the Archives, Federal Triangle, Mt. Vernon Square, Pentagon and Smithsonian. Subways will not run at a few additional stations, but will still be open as designated entry only or exit only areas for crowd control.

The F Street entrance at Judiciary Square will be closed from Thursday 12:30 p.m. until 3 p.m., with an additional closure starting Inauguration Day at 4 p.m. through system closing. Customers will be directed to the 4th Street entrance instead. Massachusettes Ave NW exits at Union Station will also be closed at 7 p.m. on Thursday because of security preparations.

There will be no road service down Pennsylvania Avenue NW, since the street will be closed between the Capitol and the White House for the inauguration parade.

D.C. Department of Transportation released a walking map to help visitors navigate the city streets during the days leading up to the inauguration and following. The map also includes details on the inaugural parade route.