The first reason your garage door will be safer if it's inspected regularly is that the technician will be able to identify any potential problems. A garage door can continue functioning properly for a long time even as the parts are wearing down. And sadly, many of the warning signs of a problem are subtle so you may not recognize any problems until minor problems became major, causing inconvenience, injury, or both.
Some homeowners feel a regular professional tune up isn't necessary because they're aware of proper door maintenance and feel confident that they can identify any problems. However, there are many other detailed parts that contribute to the functionality and safety of a door beyond the basic parts like rollers, hinges, tracks, etc. The bearings, brackets, springs, and many other smaller parts are essential parts in determining how well your door works.
Another reason your garage door will be safer if it's inspected annually is that it'll receive the maintenance it needs to make sure it keeps running smoothly. Lubricating and tightening the proper components not only help extend the life of your garage door, but it make it run more smoothly as well.
Spring Repair or Replacement
One of the most dangerous parts of the garage door is the springs because they contain an enormous amount of tension. Broken door springs are not only extremely dangerous for an untrained professional to attempt to replace or repair, but a spring that needs adjusting or replacement can make your door unbalanced, which can put your door at risk of further damage as well as increasing the potential for personal injury if the door doesn't work properly. A regular inspection can ensure the springs are working properly.