We know readers have lots of questions about TAP. (You’ve sent in 40 comments on our turnstiles post since last week!) But if you think you already know a lot about TAP, you may want to check out a new video contest being sponsored by Cubic Transportation Systems, manufacturers of the TAP card and other fare cards like it in other cities. There are prizes attached, including an early bird prize for entries submitted by Sept. 30. For details, go to their website.

By the way, don’t confuse this with Metro’s just closed 2011 Transit Flicks Video Contest, which will post its finalists on metro.net in early October.