system provides real-world data for the
14 November 2007.
Last month, Nissan Motor Co., Ltd.
announced the start of its "slip-hazard warning
system" tests in Hokkaido, Northern Japan, to help
mitigate accidents on slippery roads, especially in cold
The advanced intelligent-system
combines data from its Intelligent Transport System
(ITS) technologies (see also ASV-4,
prevention system) - an information system that
connects people, vehicles and traffic infrastructure -
and in-vehicle ABS (anti-lock braking system) to issue
real-time voice alerts as the vehicle approaches a
slippery point in the road.
The Hokkaido test is part of the ITS
project piloted in Kanagawa Prefecture since October
last year, involving customers' vehicle participation (a
collaboration between Nissan, NTT DoCoMo Inc.,
Matsushita Electric Industrial Co., and Xanavi
Infomatics Corp.) to help reduce traffic accidents and
Multi-dimensional detection -
In the slip-hazard warning system tests, slippery-road
conditions can be monitored and evaluated via:
- Probe data (vehicle location, speed
and other information via cellular communications),
- Real-time map of slippery points relative to current
vehicle position, based on data received via its
Carwings communications system and probe information,
such as the activation of ABS which indicates slippery
- Statistical data of historical records of slippery
areas, based on cumulative data on accident points, such
as the location of reported skid accidents from past
In combining real-time and
statistical data, the slip-hazard warning system
provides additional safety and accuracy layers, allowing
even to anticipate dangers, not only from current
situation data, but from previous accidents, bringing
the benefit of other people experiences in the past, to
every driver in a risky situation.
The extension of the project in
Hokkaido is intended to evaluate the tolerances in the
system under real-world driving conditions.
Nissan estimates about 100 vehicles
equipped with the Carwings navigation system (it offers
traffic information, route navigation...etc. ) around
Sapporo city, to provide the necessary real-world
driving sample data for this project.
Started last October, the current
test phase will be conducted until March 2008, in
cooperation with the Hokkaido Prefectural Police.
Nissan hopes to examine the accuracy,
effectiveness and feasibility of the system for future