Welcome to the neighborhood. Yes, those are usually commuter vans — people still say dollar vans, but the fare isn’t literally a dollar and isn’t regulated like the MTA. They run along a few fixed corridors, and Flatbush is one of the main ones. You don’t flag them like a yellow cab from any old spot, but they aren’t as rigid as a bus stop either. The practical move is to stand near a major intersection or subway station where the van can pull over without blocking a crosswalk, make eye contact, and raise your hand slightly. The driver will often tap the horn or swing toward the curb. Ask the destination through the window before stepping in, because a van marked “Utica” won’t help you if you’re going the other way.
Payment is almost always cash, small bills or exact change. Some operators have a cash box and may make change, but don’t count on it. They don’t take OMNY or MetroCards. I’ve seen a few with card readers lately, but that’s still the exception, not the rule. Board quickly and be ready to tell the driver where you want to get off, because there are no recorded announcements and no pull cord. The main caveat: they’re privately run and not all of them are licensed, so quality, insurance, and driving style vary a lot. They’re great for a short hop when the B41 is stuck or you need a quick ride along the corridor, but I wouldn’t build a whole trip around one if you have a hard deadline.