堵截是公安机关在犯罪嫌疑人和犯人逃跑方向的前方进行设卡或设伏拦堵的一项警察勤务,其作用是缉拿在逃的犯罪嫌疑人和逃犯、协助查破案件。在公共交通中转场所实施堵截勤务包括车站、码头、机场设卡堵截勤务、嫌疑车辆的堵截勤务等。 Interdiction is a public security organ in the direction of the suspects and prisoners escape to set up a card or blockade of a police service, its role is to arrest fugitive suspects and fugitives to help check the case. In public transit transit sites to implement interdiction services, including stations, docks, airports card blocking service, blocking the suspect vehicles and so on.