TOKYO – Nissan will test its “slip-hazard warning system” in Hokkaido, Northern Japan, between November 2007 and March 2008, according to Telematics Update. The system uses real-time road condition data collected from probe cars. Nissan expects about 100 vehicles equipped with the Carwings navigation system to provide the necessary real-world driving sample data for this project.

The system combines data from its ITS and in-vehicle ABS to issue real-time voice alerts as the vehicle approaches a slippery point in the road. Nissan hopes to examine the accuracy, effectiveness, and feasibility of the system using various probe data, for future commercial application.

In addition to the slip-hazard warning system, the newly improved Carwings system offers:

• Real-time map of slippery points relative to current vehicle position based on data received via its Carwings communications system and probe information.
  

  
  

• Statistical data based on historical records of the slippery points.
  

  
  

• Cumulative data on accident points.
  

  
  

• Location of reported skid accidents in the most recent years and from past years.