Fall prevention is a passive way of preventing falls, e.g. use of guard rails on a second-story walkway. Meanwhile, fall restraints prevent workers from reaching and then tumbling over an unprotected platform (e.g., use of a body harness and lanyard fixed to an anchor). Lastly, fall arrest stops a fall that is already happening (e.g., lanyards that can carry 5,000 lbs or shock absorbers that can minimize injuries).