If that little brake warning light pops up on your dash, do you know what it means?

Or, it could mean there's something wrong with your anti-lock brake system. That is a pretty complex symphony of speed sensors, computers and wiring, and sometimes things get a little out of whack. You could have a defective sensor or some wiring may have gotten damaged or come loose.
It's also possible you have low brake fluid. That could be caused by a number of things. One simple reason is that your brake pads have worn down. Replacing them could solve the problem. Another possibility is that you have a leak in your brake system. That could be serious. If your brake fluid level gets really low, your stopping power goes down along with it, and a vehicle that can't stop is a safety hazard to you and others on the road.
Of all the warning lights on your instrument panel, pay attention to the brake warning light. If it comes on, come on over to Auto Select very, very soon. A vehicle is great when it's moving. But if it can't stop, well, that is a disaster waiting to happen.