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.
Jamalrani/iStock/Getty Images. APO, or Army Post Office, and FPO, or Fleet Post Office, are forms of address used by the United States military to deliver letters and packages to service personnel. APO addresses are used by both the Army and Air Force, while FPO addresses are appropriate for anyone serving in the Navy. Your mail will be charged at the domestic rate, but be aware that restrictions exist on what can be sent to an APO or FPO address. Youâre likely to have to complete a customs form for any packages.