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Nissan ASV-4: preventive technologies 
With vehicle-to-vehicle communications
 

The Nissan ASV-4 is intended to test various technologies.

The Nissan ASV-4 is intended to test various technologies.

APN,
14 November 2007.

In preparation for a future commercial application, Nissan Motor Co., Ltd. has announced the development of it’s fourth-generation Advanced Safety Vehicle, known as the Nissan ASV-4.

Based on the Advanced Safety Vehicle (ASV) Promotion Plan by the Japanese Ministry of Land, Infrastructure and Transport, the vehicle is designed to help reduce accidents thanks to advanced vehicle-to-vehicle communications which enable vehicles with wireless terminals to communicate with one another and share information, including location and route direction

The Nissan ASV-4 warning system, 1.

The Nissan ASV-4 warning system, 2.

The Nissan ASV-4 warning system, 3.

The Nissan ASV-4 warning system, 4.

The Nissan ASV-4 warning system employs vehicle-to-vehicle communications. The preventive safety technologies were developed to address specific high-risk scenarios. As the vehicle approaches an intersection or attempts a right turn, the system can warn the driver of the potential danger with an on-coming vehicle as it accelerates after a stop.

The ASV-4 was developed as Phase Four of the project, following Nissan's previous participations in Phase One (1991-1995), Phase Two (1996-2000) and Phase Three (2001-2005).

The Nissan ASV-4 is intended to test various technologies. Its warning system employs vehicle-to-vehicle communications to alert drivers to take defensive actions in situations where an on-coming vehicle is not yet visible, but poses a potential threat to road safety.

While the tests use real-time navigation information, the system has currently some limitations due to its dependency on information received from vehicles equipped with the Nissan navigation system, therefore participating drivers must remain alert to other vehicles on the road that the system is unable to detect.

The preventive safety technologies deployed on the Nissan ASV-4 were developed to address specific high-risk scenarios that account for approximately 60% of traffic accidents in Japan (based on cumulative accidents estimated by Nissan ASV-4 project).

Cumulative data on traffic accidents reveal that most accidents occur within the following circumstances:

  • Two vehicle collisions at blind-intersections,

  • A right-turning vehicle hit by on-coming vehicle from the opposite direction at an intersection,

  • Collision of a motorcycle or bicycle with a left-turning vehicle,

  • Rear-end collision.

The driver can both hear and see the warnings issued by the navigation system when a potentially dangerous situation has been identified.

For example, as the vehicle approaches an intersection or attempts a right turn, the system can warn the driver of the potential danger with an on-coming vehicle as it accelerates after a stop, even when the driver fails to notice.

Nissan is leading the Intelligent Transport System (ITS) technologies (see also Slip-Hazard Warning system, drink-driving prevention system) project in Kanagawa prefecture, involving customers’ vehicle participation, where the system is fed traffic data via links to traffic infrastructure (e.g. using beacons).

Another on-going project employs telematics via cellular phones to improve traffic flow and reduce traffic congestion. To help reduce vehicle-pedestrian accidents, Nissan has developed an ITS system based on cellular communications between pedestrians and drivers, and is refining its information system to allow the driver to receive an alert on an unseen pedestrian.

In Japan, Nissan aims to halve the number of traffic fatalities or serious injuries involving Nissan vehicles by 2015 compared with the level in 1995.

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