traffic signal

基本解释

Then they gave each traffic signal a sensor that provides information about traffic at a given moment.
然后，他们给每个交通信号灯装上传感器，用以了解特定时段的路面信息。
The fast pace of technology change in the 20′s brought us the lie detector, traffic signal, bubble gum and Penicillin.
20世纪20年代科技的快速发展给我们带来了测谎仪、交通信号灯、泡泡糖和青霉素。
Traffic signals include traffic signal lamps, traffic signs, traffic line markings and the command of traffic policeman.
交通信号包括交通信号灯、交通标志、交通标线和交通警察的指挥。

Transportation officials equipped with increasingly sophisticated technology are considering ways they can use traffic signal-prioritization not just to speed the progress of buses, but to solve bus bunching.
FORBES: Busting Bus Bunching With Traffic Signals
These alerts will enable drivers to plan and share alternative travel routes, improve traveler safety and help transportation authorities better predict and reduce bumper-to-bumper traffic before it occurs through improved traffic signal timing, ramp metering and route planning.
ENGADGET: IBM shows off Smarter Traveler traffic prediction tool
Because tunnels block a radar signal, trains rely largely on hard-wired equipment like the box beside the track, which helps drivers and dispatchers talk to each other and controls a machinelike traffic signal, giving the drivers basic commands to stop and go.
NEWYORKER: Boss Rail