The number to call for the CBBT authority (to get an annual permit) is: 804-331-2960. You will get a letter which explains the restrictions, etc. When you get to the CBBT, check in first at the police station (at either end) -- they will note the make and color of your car, thus avoiding CBBT police from stopping and asking what you're doing! Gail Mackiernan gail@umdd.umd.edu