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On tow with driverless car

The autonomous car is towing trollies carrying finished vehicles between designated loading and unloading points at the plant in Yokosuka city

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Introducing IVT will allow the automaker to improve production efficiency
Introducing IVT will allow the automaker to improve production efficiency
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Driverless towing cars are connected to a central traffic control system

More than 1,600 test runs have been carried out at the plant

Data acquired ensures the system operates reliably within the plant’s premises

Nissan Motor Company is trialling a driverless towing system at its Oppama Plant in Japan.

 

The Intelligent Vehicle Towing (IVT) system, based on a modified Nissan Leaf electric car, is used to autonomously tow trollies carrying finished vehicles between designated loading and unloading points at the plant in Yokosuka city.

 

The plant’s existing logistics system required finished vehicles to be transported from the end of the production line to the facility’s dedicated wharf by a team of drivers, at which point they were loaded onto ships. Introducing IVT will allow the automaker to improve production efficiency.

 

Unlike conventional automatic guided vehicle systems for transporting parts, which often require the installation of rails or extensive use of magnetic tape, this system does not need any special infrastructure to operate.

 

The towing car is equipped with an array of cameras and laser scanners that detect lane markings, curbs and potential obstacles or hazards around the vehicle. By cross-referencing this information with map data, the towing car calculates its own location, negotiating the route to its destination unaided.

 

The towing car travels within the speed limits of the factory, and automatically stops if it detects an obstacle or hazard ahead, before setting off again when it has determined that the road ahead is clear.

 

The towing route can easily be altered to accommodate changes in production processes or vehicle transport routes. All driverless towing cars are connected to a central traffic control system, which can monitor the location, driving speed, remaining battery and operational status of each vehicle.

 

When two driverless towing cars meet at an intersection, the control system’s algorithm determines which car should be given right-of-way, and in case of emergency, the system can stop the vehicles remotely.

 

Since trial operations of the system began one year ago, more than 1,600 test runs have been carried out at the plant. The data acquired has been utilised to ensure that the system can operate reliably within the plant’s premises.

 

A safety system and a fail-safe system have been developed to counter potential risks or unexpected conditions the IVT system may face during autonomous driving, including adverse weather and low light conditions. Nissan will continue to test the system at its Oppama plant, and will examine the possibility of implementation at other manufacturing facilities both in and outside Japan.

 

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