 Starting at 5 p.m. Tuesday, July 4th, you won't have to pay to ride Metro. Fare gates will be open and you'll see signs posted about the free fares on the rail lines. Service will also increase to accommodate the large crowds celebrating in D.C. If you plan to watch the fireworks on the National Mall, Metro recommends avoiding the Smithsonian Station and suggests choosing a station that will be less crowded like Foggy Bottom or Metro Center.