"I am the first to say the law is the law and the law applies to everyone...however, I think the issue with the parking situation is based upon daytime activity. And Thursday nights there are very few classes on the campus, again only two in this building. "
Honestly, under the circumstances, I wouldn't give this a second thought. But if it bothers you or others, could someone suggest to admin that the signs be written so they're only applicable during daylight hours? This could be causing problems beyond inconvenience, and if it's really that empty every evening it's not a good use of resources.