stationary grid

例句：

1. 1.The stationary grid is used to control the movement of vehicles on the road.
   固定网格用于控制道路上车辆的运动。
2. 2. The stationary grid was installed to improve traffic flow and safety.
   安装固定网格是为了改善交通流和安全。
3. 3.The stationary grid system has been widely used in modern cities to manage traffic congestion.
   现代城市广泛使用固定网格系统来管理交通拥堵。