40 Hour Property and Building Inspection Practice Test

What is a key feature of safety for motorized garage doors?

1. Color-coded wiring

2. Automatic reversal on obstruction

3. Remote control accessibility

4. Digital displays

The correct answer is: Automatic reversal on obstruction

A key feature of safety for motorized garage doors is the automatic reversal mechanism that activates when an obstruction is detected. This system is crucial because it prevents the door from closing on anything or anyone that may be in its path, such as a vehicle, pet, or child. When the door encounters resistance, sensors or physical mechanisms prompt it to reverse direction and open, ensuring that it does not pose a risk of injury or damage. While other features such as color-coded wiring, remote control accessibility, and digital displays may enhance usability or convenience, they do not directly contribute to the safety of the door operation in the same way that automatic reversal does. The reversal mechanism is a fundamental requirement and is often mandated by safety standards, making it a critical aspect of the design of motorized garage doors.