From Baltimore/Washington International Thurgood Marshall Airport (BWI)

Upon exiting the airport, follow the signs to get onto I-195 West. Follow I-195 for approx. 3.5 miles and get onto I-95 South. Continue on I-95 South for about 19 miles to the Capital Beltway (I-495); Follow signs to College Park, US Route 1 South. Continue south on US Route 1 for two miles to the University's Campus Drive entrance. Turn right on Campus Drive and immediately make another right turn. At the second stop sign, the ISR is located in the A.V. Williams building on your right.  The Jeong H. Kim Engineering Building is to your left. Visitor parking is available on the left, just past the Kim Building in the Paint Branch Drive Visitor Parking Lot.
Ground transportation from BWI

From Dulles International Airport (IAD)

Upon exiting the airport, follow the Dulles Airport Access Road East for about 13 miles and exit onto I-495 North. Follow I-495 North for about 18 miles. Just after I-495 joins I-95 South, get off at exit 25B towards College Park on US Route 1. Follow US Route 1 South for two miles to the University's Campus Drive entrance. Turn right on Campus Drive and immediately make another right turn. At the second stop sign, the ISR is located in the A.V. Williams building on your right.  The Jeong H. Kim Engineering Building is to your left. Visitor parking is available on the left, just past the Kim Building in the Paint Branch Drive Visitor Parking Lot.
Ground transportation from Dulles

From Ronald Reagan Washington National Airport (DCA)

Upon exiting the airport, get onto the George Washington Memorial Parkway headed north. Within a mile, take the I-395 North exit (to Washington). After crossing the 14 the Street bridge, follow signs for I-295 South. As you merge onto I-295 South, stay in the right lane. After 1/2 mile, take exit 3A (Suitland Parkway). Stay in right lane and loop right back onto I-295 North.

Follow signs "To I-95 North and US 50." At the intersection of the Baltimore Washington Parkway and US 50, follow signs for MD 201, Kenilworth Avenue (right two lanes). Follow Kenilworth Avenue approximately 4 miles and turn left on Paint Branch Parkway. Follow Paint Branch Parkway to US Route 1 (Baltimore Avenue). Go straight across US Route 1 onto the University's Campus Drive entrance. Make your first right turn. At the second stop sign, the ISR is located in the A.V. Williams building on your right.  The Jeong H. Kim Engineering Building is to your left. Visitor parking is available on the left, just past the Kim Building in the Paint Branch Drive Visitor Parking Lot.
Ground transportation from Reagan National