Skip to Content

AOL Tech

TrafficLight posts

Car Tech

Traffic Light Turned Green in All Directions for 30 Years


Let's say that a new traffic light is installed at an intersection. On one side of the light is a car dealership, and the light in front of the dealership leads onto a highway. Now, let's say that when the light was programmed, a mistake was made -- and every time the light changes, it is actually green in all directions for seven seconds. How long do you think such a mistake would go unnoticed? A few days? A few months at most? How about 29 years? According to Japan's Daily Yomiuri, that's how long it took authorities in Fukushima, Japan to notice that a traffic light installed on National Route 49 was improperly programmed.

Amazingly, until June 19, the two-way green light had never caused an accident. The light's luck ran out, however, when a driver tried to exit the car dealership at the same time that another driver was following the green light onto the road, and the two cars collided.

Read more →

Switched Video

Follow Switched on Twitter

Deals of the Day

Latest Reviews from CNET.com

CNET provides the latest tech news, unbiased reviews, videos, podcasts, software, and downloads, making tech products easy to find, understand and use.

Top Product Reviews

Featured Galleries

Nissan Land Glider
Vintage Keyboards
Retro Computer Logos
Vintage Computer Festival
Motorola CLIQ
iPod touch
iTunes 9
Video iPod Nano
The Beatles: Rock Band

 

Switched Desktop

Get the New Switched Desktop

Latest tech news, Switched mail, and more.

AOL Tech Network

Resources

Autoblog

Daily Finance

Download Squad

Engadget

Joystiq

Urlesque

Fanhouse Main

WalletPop

Gadling