Toyota introduces new technologies to curb unintended acceleration

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Old 20 Nov 2012, 06:56 pm   #1 (permalink)
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Default Toyota introduces new technologies to curb unintended acceleration

From AB

Toyota produces new systems to help reduce common parking-speed
collisions and high-speed rear-end shunts

Technology soon to be featured in Toyota production vehicles
Opening of new proving ground to test and evaluate Intelligent
Transport Systems
New measures announced at Toyota's 2012 Safety Technology Seminar

Safer vehicles and the elimination of road accident injuries and
deaths are central to Toyota's future transport strategy and at its
annual Safety Seminar in Japan this week the company has revealed
details of new technology to help prevent collisions – both familiar
low-speed parking accidents and high-speed rear-end shunts.

It also has announced the opening of a new proving ground for testing
Integrated Transport Systems (ITS) that use radio communications
between vehicles, road infrastructure and pedestrians to improve

Intelligent Clearance Sonar and Drive-start Control
A large number of collisions are caused by drivers hitting the wrong
pedal or selecting the wrong gear, particularly when parking. Toyota
has come up with two new systems to help reduce the consequences when
this happens.

The Intelligent Clearance Sonar is able to detect obstacles that are
outside the driver's line of sight and will automatically apply the
brakes if there is a risk of a collision. Designed to be particularly
useful when negotiating a car park, it will sound an alarm, reduce
engine power and apply the brakes.

Drive-Start Control recognises if the wrong gear has been selected
when the driver is applying the throttle. It will flash up a warning
and reduce engine output to limit a sudden start or acceleration.

This can help, for example, when a driver reacts to hitting an object
while reversing by making a quick shift to a forward gear while still
pressing the accelerator pedal.

Toyota is set to introduce both systems in future vehicles.

Pre-Crash Safety system with Collision Avoidance Assist
Toyota has further developed its Pre-Crash Safety system with a
collision avoidance function that can help reduce the consequences of
rear-end impacts, even at high speeds.

This version of PCS – a technology already featured on a number of
Toyota and Lexus models - uses a millimetre-wave radar to monitor the
risk of collision with a vehicle ahead. If it detects an impact risk,
it triggers an alarm and warning display to alert the driver to apply
the brakes. When the brake pedal is pressed, the system will increase
the braking force to up to twice the average level achieved by

This can slow the vehicle down by up to 37mph* (60km/h). If the driver
fails to step on the brakes, the system will automatically deliver
deceleration*** of between nine and 19mph****.

Toyota's analysis of traffic accident data shows that more than 90 per
cent of rear-end collisions happen when the difference in speed
between two vehicles is within 37mph, so it set out to engineer a
system based on this intelligence to deliver industry-leading safety
performance. Already, the technology is being prepared for use in
forthcoming models.

* Calculated from US accident data.
** When the driver's car is travelling at 50mph (80km/h) and the
vehicle ahead at 12.5mph (20km/h).
*** Automatic deceleration at speeds of 9mph and higher.
**** When the driver's car is travelling at 31mph (50km/h) and the car
ahead at 12.5mph (20km/h). Operation may be affected by road and
weather conditions.

Intelligent Transport System proving ground
Toyota has opened a new proving ground to test and evaluate its
Intelligent Transport System technology. The site extends over 3.5
hectares at the Higashi-Fuji Technical Centre, creating a simulated
city centre road system, complete with traffic signals.

It will allow Toyota to test a system for road-to-vehicle
communications using a 700Mhz radio frequency in controlled but
authentic traffic conditions. This transmission band has been approved
by the Japanese government for ITS use, as it has the right reception
breadth and quality to be suitable for connecting with vehicles at
junctions and other locations where a driver's view may be limited.

When the proving ground is fully operational, Toyota will accelerate
its research and development of environmental systems to improve fuel
efficiency and driver support systems that can help reduce the risk of
accidents with pedestrians and other road users in urban traffic.
Toyota is also undertaking R&D of systems that allow for a
continuous exchange of road-to-vehicle, vehicle-to-vehicle and
pedestrian-to-vehicle information.
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