Another controller, called the radar hand-off controller, assists the radar and associate radar controllers during times of heavy traffic, watching the radar screen and helping to maintain smooth air-traffic flow.

• 当交通处于高峰时期，除了雷达管制人员和联合管制人员外，还有临时雷达管制人员，监视雷达信息以帮助保持交通顺畅。