Before you're not able to get your car stopped in Annapolis, there are some signs that you can look for if you think your brakes are going out. Your car probably has a brake light that will come on if the fluid in the car gets low or if your brakes need serviced by Genesis of Annapolis. Don't avoid this light as its often one of the first signs that something is wrong.
Listen to the sounds that your brakes make when you're pressing on the pedal. If you hear grinding, then it could mean that there is no brake pad left and that the rotors are damaged. If you hear squealing, then you probably have a little time to get new brake pads before the rotors get worn as the pads are typically low at this point.
When you begin to brake, you shouldn't feel any kind of vibration or shaking in the steering wheel or in the front end of your car. This could mean that your rotors are uneven and need to be turned or replaced.