traffic signal

基本解释

Then they gave each traffic signal a sensor that provides information about traffic at a given moment.
然後，他們給每個交通信號燈裝上傳感器，用以了解特定時段的路麪信息。
The fast pace of technology change in the 20′s brought us the lie detector, traffic signal, bubble gum and Penicillin.
20世紀20年代科技的快速發展給我們帶來了測謊儀、交通信號燈、泡泡糖和青黴素。
Traffic signals include traffic signal lamps, traffic signs, traffic line markings and the command of traffic policeman.
交通信號包括交通信號燈、交通標志、交通標線和交通警察的指揮。

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