Ramp Metering，可翻译为匝道控制或者匝道信号控制(这样似乎更直观)。

来看看它是怎么回事吧。

What Is It? 它是什么 Ramp metering is the use of traffic signals at freeway on-ramps to control the rate of vehicles entering the freeway. 匝道信号控制是指通过高速公路匝道上的交通信号灯来控制进入高速公路的车辆。

The metering rate is set to optimize freeway flow and minimize congestion. The metering rate can be fixed, or responsive to local or system-wide conditions. 匝道调解率的设置用于优化高速公路交通流和使交通堵塞降至最低。

匝道调解率可修正，或根据当地或整个系统的情况进行调节。

Signal timing algorithms and real-time data from mainline loop detectors are often used for more effective results. 信号配时算法以及主线车道实时检测器用来实现更高效的运行。