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Projects to Ease Traffic Congestion with the Use of ITS

Fuel consumption is greatly affected by traffic circumstances and the way a car is driven.
We are actively working to bring about social infrastructure that will help to improve the traffic environment. This includes efforts to solve difficult road traffic problems, such as the alleviation of congestion, which cannot be achieved by individual automakers. We recognize the importance of intelligent transport systems (ITS) technology in overcoming these problems, and are working together with other industries for the practical realization of ITS.

What is ITS?

Intelligent transport systems use advanced communications technology to link information on humans, roads, and vehicles in a network, and reduce road traffic problems such as accidents and congestion. ITS can link with road communications equipment and other infrastructure, and use information on the status of nearby vehicles and the surrounding traffic environment to help raise fuel efficiency, alleviate congestion, and improve safety.

Projects using ITS

The SKY Project in Japan

Nissan began the SKY Project in October 2006 to reduce traffic accidents and ease congestion using ITS in Kanagawa Prefecture, a major Nissan hub. A significant feature of this project is the collection of real-world vehicle data from our customers to examine ways of raising energy efficiency by alleviating congestion and reducing CO2 emissions in daily driving.
The project is conducted in partnership with industries outside the automobile industry, and is moving ahead with the cooperation of related government agencies.
Nissan hopes to successfully demonstrate the effectiveness of ITS in Kanagawa Prefecture, and to expand these systems to all of Japan and subsequently to the rest of the world. Nissan is broadening its efforts to include the use of social infrastructure in ways that go beyond the boundaries of an automobile manufacturer.

  • (1) Probe car traffic information (vehicle location, speed, etc.) is collected from the car navigation systems of SKY project volunteers, and precise traffic information is processed at the Probe information center.
  • (2) The traffic information processed from this Probe information is provided to the car navigation systems of trial volunteers. This allows a greater amount of road traffic information to be obtained than with the earlier VICS (Vehicle Information and Communications System). Using this traffic information enables drivers to find a faster and smoother route, thereby helping to ease congestion.

For more detailed information, please see the following:


In cooperation with the Beijing Transportation Information Center in Beijing, China, we are implementing a project called STAR WINGS to develop a new information system aimed at alleviating traffic congestion and improving the environment in the city of Beijing and other parts of China.

How STAR WINGS works:
  1. Real-time traffic information is generated by the Probe car traffic information system* of the Beijing Transportation Information Center, and this information is sent to car navigation systems with the use of mobile phones.
  2. The car navigation system comprehensively processes the real-time traffic information received together with statistical data built up from past traffic information. It then searches for the fastest route to the destination. This enables drivers to significantly reduce the driving time to their destinations.

Results from driving tests that have been carried out since January 2007 show that the average travel time reduction is about 20%.

  • *Probe car traffic information system: A technology that collects information such as vehicle location and speed with the use of wireless communications technology.
For more detail activities, please see below.

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