How do the "traffic lights" on urban roads work? Understand the intelligent components of traffic lights

Have you ever wondered about the internal structure of the traffic lightsthat pass through countless intersections every day? The seemingly simple red, green and yellow three-color light is actually an intelligent terminal with the precise collaboration of multiple systems. Today, let's lift the veil of mystery surrounding traffic lights!

Core component: It's not just a light bulb

1. Lamp panel unit
• Light source heart: Modern Signal Lights generally use high-brightness LED beads, which are over 80% more energy-efficient than traditional incandescent lamps and have a lifespan of over 50,000 hours
• Professional lenses: Honeycomb-shaped optical lenses ensure uniform light scattering, allowing for clear visibility even from 200 meters away under intense sunlight
• Lens hood design: Prevents confusion between adjacent light colors and avoids misjudgment by drivers

2. Intelligent control of the brain
• Signal controller: The "command center" in the iron box at the intersection, equipped with a built-in chip to run traffic algorithms in real time

3. Support system
• Lightning protection module: Surge protector against severe weather
• Heat dissipation structure: Aluminum alloy lamp housing + ventilation channels to ensure stable operation in high-temperature weather
• Inclined bracket: The lamp post is precisely designed at a 15-degree Angle, taking into account both the field of vision and wind resistance

The underlying wisdom logic
Traditional signal lights operate at fixed cycles, while intelligent signal lights have achieved four major upgrades:
✅ Sensor control: Automatically extend the green light duration in the direction of congestion through geomagnetic sensors
✅ Green wave coordination: Networked control of the opening and closing of green lights at consecutive intersections to enable "green light all the way"
✅ Priority Pass: Send priority pass signals for buses and ambulances
✅ Remote diagnosis: Networked return of fault information, repair response speed increased by 60%

Safety trivia

Why use red, yellow and green?

Red has the longest wavelength and strong penetration (warning), yellow has high brightness (transition), and green has a large contrast with natural colors (passage).

• Blind people's reminder: The new type of signal light is equipped with a buzzer, which guides visually impaired people through sounds of different frequencies
• Anti-misreading design: Each light color lights up independently to prevent accidents caused by "full light failure"

Technology makes travel more efficient

Since the first appearance of gas signal lights in London in 1886, to today's AI-enabled intelligent transportation systems, signal lights have always been the "silent guardians" of urban order. With the development of vehicle-road coordination technology, in the future, traffic lights may even be able to directly communicate with self-driving vehicles - smart transportation will continue to progress along with the advancement of technology

Having been deeply engaged in the industry for 23 years, we are dedicated to safeguarding travel safety with meticulous craftsmanship
As a firm practitioner of intelligent transportation, JKTRAFFICLIGHT has been dedicated to the research and development innovation and lean manufacturing of traffic signals since its establishment in 2002. 23 years of technological accumulation have endowed us with a language that better understands the road:
✅ All-scenario Solutions: from traditional intersection lights to road traffic control signals, our product line covers all application scenarios
✅ Global Safety Certified: Certified through international standards such as EN12368, CE, ROHS, etc., serving more than 50 countries and regions worldwide
✅ Full cycle service: provide "design - installation - operation" integrated service, 7×24 hours remote technical support
Let every wait become a promise of safety
We look forward to joining hands with more urban managers and engineering partners to build an efficient and smooth future transportation network with reliable optical design and intelligent control technology.
Consult immediately
Website: https://site_0ded41ef-5803-4650-9c3f-47d31e6f3cb2/
Email: sale1@jktrafficlight.com
Whatsapp:+86 13677945786