Drivers stuck overnight in their cars and school buses trapped.
拥堵使司机晚上被困在车里，校车也同样困在高速上。
英语百科
Bus trap
A bus trap is a metal grate placed over a ditch or depression in the road with tines spaced far enough apart that small-diameter-wheeled vehicles fall in between the tines but close enough that larger-diameter-wheeled vehicles, such as buses, may pass.