Lacking any further information my initial thought would be that the ABS booster pump has failed.
the brake switch at the pedal is stuck or out of adjustment.
Assuming you mean brake lights, the brake light switch is broken or out of adjustment.
faulty brake light switch (on pedal)
yes 2002 Ford Focus do have 2 lights on license plate
check the brake light switch
brake switch
Is it a woman who asked this question?
Check the bulbs they are double filamented with smaller being for brake lights
Check the bulbs - they are double filamented- smaller for stop and larger for tailights
brake light switch, may be located above the brake pedal where it mounts under the dash, did you find any parts laying on the floor ? No I did not
broken belt
same problem what the answer