Dartford Crossing charges, exemptions and penalties. You must pay if you use the Dartford Crossing between 6am and 10pm. You must pay by midnight on the day after you cross. The payment service is called Dart Charge. You no longer pay at the barriers when you use the Dartford Crossing.artford Crossing charges, exemptions and penalties. You must pay if you use the Dartford Crossing between 6am and 10pm. You must pay by midnight on the day after you cross. The payment service is called Dart Charge. You no longer pay at the barriers when you use the Dartford Crossing.
Messages: 10,314. FPO most definitely stands for Fleet Post Office, they mostly service Navy and Marine personnel, however there are times when FPO's service Air Force and Army. APO stands for Army or Air Force Post Office. The same is true as above, however they ocassionally service Navy and Marine personnel.
AA is short for Armed Forces of the Americas - all branches of the military forces of the United States (Army, Air Force, Coast Guard, Marine Corps and Navy). APO is short for Army Post Office, which is part of the Military Postal System; it serves land-based military personnel (typically Army and Air Force). FPO is short for Fleet Post Office and serves water-based soldiers (typically the Navy, Marine Corps and Coast Guard).