road-block

基本解释

The road was chock a - block with varieties of vehicles again today.
马路上今天又塞满各种车辆了。
The new road-block resembling the structure of a tumbler can recover to the up-standing state when hit by something. Meanwhile, th hollow structure makes it easy for transportation.
新型路障具有与不倒翁相似的结构，当它受到物体的撞击时，路障自身能够恢复到治理状态，并且因为其具有中空结构，所以便于运输。
stray-birds.spaces.live.com
The main issue of the task is to design an electronic no-parking roadblock system, which composes of the vehicle carrying equipment, the road-block inspector and computer interface.
本课题主要研制一套不停车电子路障系统，由车载器、路障巡检站和上位机控制组成。

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When the police or the army put a roadblock across a road, they stop all the traffic going through, for example because they are looking for a criminal.