Stop signs require you to do two things... First stop, which is generally defined as ceasing any forward motion. You can track-stand, or better yet, put a foot down. Next, you're required to yield right-of-way to any crossing traffic, and not proceed through the intersection until the coast is clear.

Red lights are different. A redlight means to stop (again cease any forward motion), and not to proceed any farther until the light turns green, whether there's any traffic or not.

Tom