Garage entrance height barrier image

Quick answer：

A garage entrance height barrier is a mechanical device installed at the entry of a garage or parking area to prevent vehicles taller than a specified height from entering. These barriers often come in the form of a杆 (竿), which can be raised or lowered manually or automatically to control access. They are commonly used in residential, commercial, and industrial settings to protect the structure and to ensure compliance with local regulations regarding vehicle height.