Annoyingly in media there are a lot of risks involved. People can trip on anything. Like anything. You can be on the other side of the room and somehow they will trip over your foot and take out your lighting rig. It happens. This means that it is very important to carry out risk assessments. Below is an example of one. The names aren't real people (obviously) except for me. I think. I'm pretty sure I'm real.
Thats how its done. They get done to make sure no one hurts themselves of anyone else. Now you know and, as a wise man once said, knowing is half the battle.