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FAQ - Parking & Transportation

If you can't find the information you're looking for, please contact the Reception desk at x3000 or Debbie Dillon (, x3105.


ACP parking lot

All spaces in the parking lot are general parking and you can park in the space of your choice.  However, employees may not park in visitor parking.  There are handicapped parking spaces on the east and west sides of the building.  These should only be used if you have a handicapped parking sticker issued by the state in which you reside.  ACP does not have jurisdiction over the handicapped parking spaces and you can be ticketed by the Riverdale police if they are patrolling the lot.


Bike lockers

ACP has eight bike lockers for use by employees on a first come, first serve basis.  Prior to using a locker, you will need to sign a waiver.  After you have read and signed the waiver, take it to the Reception Desk.  The Receptionist will give you the combination to the lock box.  The lock box is located near the lockers and contains the locker keys.  Bike lockers are for daily use only.  If you have any problems with the lockers, contact the Reception Desk x3002 or Debbie Dillon  x3015.


Parking permits

How do I get a parking permit?
Read the rules and regulations and complete the Vehicle Registration Form. Take it to the Reception Desk, and a parking permit will be given to you.  Please adhere the sticker to the bumper of your vehicle.  If you prefer, it can be affixed to your back windshield.  Just make sure it’s visible.  Please note that ACP does not assume liability for vehicles parked in the lot.

If I will temporarily be driving a vehicle other than one registered do I need to get a parking permit?
No.  If you are driving a different vehicle on a temporary basis you will not need a sticker. We will issue you a temporary parking permit.  You can get a temporary parking permit at the Reception Desk.

If I get a new vehicle, can I use the same parking sticker?
Yes.  You can use the same parking sticker.  However, you will need to complete a registration form for the new vehicle.

Can I leave my vehicle in the parking lot overnight or for a few days?
Yes.  From time to time you may need to leave your vehicle in the parking lot overnight.  If this occurs, please contact Debbie Dillon  x3105 and inform her of your vehicle information (make, model and license plate number) and the date(s) you will be leaving your vehicle.  We will alert the security guard.  As noted above, ACP does not assume liability for vehicles parked or left in the lot overnight. 


Purple Line

The Purple Line is still in the planning stage.  When complete, it’s scheduled to run down River Road in front of ACP property.  Information on the Purple Line can be found at


Shuttle bus service

The shuttle runs from the College Park metro station to ACP, Raytheon, M-Square and USDA every 15 minutes from 6:00am-9:00am and 3:00pm-6:00pm and stops in front of the building.  The last pick up at ACP is 5:49pm.

M-Square Shuttle Bus Schedule


Transportation and taxi services

The ACP van is available for transporting meeting attendees as needed.   Arrangements for van service should be made through your Society meeting planner.  A member of the Office Services staff will pick up attendees at local hotels (Hilton Garden Inn, Greenbelt Marriott, Holiday Inn College Park and Greenbelt Holiday Inn) and bring them to ACP.  We will also take attendees back to the hotel, the College Park Metro Station or the AMTRAK Station in New Carrollton. 

Taxi Service
If you need a taxi contact the Reception Desk x3002 and we will make arrangements for you. 

We will also coordinate taxis for meeting attendees.  Please use the taxi sign-up sheet.

We use the following taxi companies:

  • Airport Taxi Service (240-463-4951)
  • Taxi-Taxi (301-577-2000)

Fares to the following locations are approximate:

BWI Airport -- $65
Dulles Airport -- $85
Reagan Airport -- $45
New Carrollton AMTRAK/Metro Station -- $20
Greenbelt Metro Station -- $13.00