Japanese Traffic

If you can tell me what the heck this sign means, then you deserve a prize. I could probably figure it out soon enough, but now when crusing by at 100 kph. It's super helpful when the signs are all in kanji too. We typically use "pictures" to remember what the signs mean. For example, Yamato train station is near by. We remember the kanji for Yamato, 大和, as "Big Night Out". See the lady in the party dress and a man in a tux looking in a mirror?