​The largest, heaviest moving object in your home is the garage door.   So, it makes sense to do frequent safety checks on the door. 
First, look for a safety label near the control button or the overhead door. It will tell you how to safely operate the door and test the reverse mechanism. 
Second, make sure the control button is mounted at least five feet above the floor or any step. This prevents small children from playing with the door operator.
Third, never allow children to play with the door or the operator.
Next, test your operator for reverse and door balance once per month. Follow the specific instructions on your door's safety label. If you don't understand these instructions or you don't have specific instructions for your door, contact a professional door service company.
Throughout the year, check the door hardware for tightness. Consult your owner's manual for the proper lubricant, and apply it to rollers, tracks and other mechanical parts.  Have the door serviced by a professional if there is any sign of problems.