Install a coin-op turnstile to enter and exit the driveway.
When we played baseball in High School and had a game, afterward we would shower and get dressed. If it was an away game we had to take a bus round trip and then we would get in later.
One time I went to get on the bus and it was 6:05. The damn bus driver made me pay the full fare. Screw him and the horse he rode in on. :-/