Follow the lanes to College Park, Route 1. NOTE: I-95 is 4 lanes and will open up to 6 lanes. Stay in the middle 2 lanes. Basically you just follow the signs that say "College Park, Route 1". Take Exit 25B to go South to the University of Maryland.
(What happens is I-95 joins I-495 (Beltway) in different ways: the 2 left lanes take you on to 95 South, bypassing Rt. 1. The 2 right lanes take you on to 495 North. The 2 middle lanes take you on the overpass of the Beltway and bring you around along the Beltway but keep you on the exits to Route 1--you'll want Route 1 South (Exit 25B).) The main gate into the University of Maryland will be on the right at a light on Route 1 about 3 miles from the I-495 Beltway.)
Take I-95 north to the Washington Beltway, I-495, where you should head east across the Wilson Bridge into Maryland towards Andrews AFB, New Carrollton, Greenbelt, College Park [about 40 minutes if traffic isn't heavy]. NOTE: DO NOT TAKE THE ROUTE 1 EXIT WHILE YOU'RE IN VIRGINIA!--you want to go around Washington on the Beltway to take either Kenilworth Ave South (Route 201) at Exit 23 or Route 1 South at Exit 25B to College Park.
KENILWORTH AVE: Just past the Baltimore-Washington Parkway is the exit for Kenilworth Ave. (201). You can take that exit, staying to your left (towards Bladensburg), and head South. Once you've gone through the light onto Kenilworth Ave., go about 2 miles and make a right at the 3rd light onto Paint Branch. You will pass the Metro Station, go under the tracks, and soon will come to the traffic light at the main entrance of the University of Maryland. To enter the campus, go straight; to go to the Best Western Maryland Inn or Comfort Inn & Suites, turn right; to go to the Quality Inn, turn left.
ROUTE 1 SOUTH: Soon after you pass the exit to the Greenbelt Metro Station, you will come to U.S.Route 1. Head South on Route 1 (Exit 25B); the main gate into the University of Maryland will be on the right at a light on Route 1 about 3 miles from the I-495 Beltway.