32 C.F.R. § 634.21
(a) Use. DD Form 2220 will be used to identify registered POVs on Army, Navy, Air Force, Marine Corps, and DLA installations or facilities. The form is produced in single copy for conspicuous placement on the front of the vehicle only (windshield or bumper). If allowed by state laws, the decal is placed in the center by the rear view mirror or the lower portion of the driver's side windshield. The requirement to affix the DD Form 2220 to the front windshield or bumper of registered vehicles is waived for General Officers and Flag Officers of all Armed Services, Armed Service Secretaries, Political Appointees, Members of Congress, and the Diplomatic Corps.
(b) Specifications.
(1) DD Form 2220 and installation and expiration tabs will consist of international blue borders and printing on a white background. Printer information will include the following:
(2) Name of the installation will be specified on a separate tab abutting the decal. Each Service or DLA may choose optional color codes for the registrant. Army and installations having vehicle registration programs will use the following standard color scheme for the installation tab: