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LS460 achieves a world-first in preventative safety

Lexus says it is pushing the boundaries of passenger and pedestrian protection with its, 'world-leading', preventive safety technology in the LS 460 flagship limousine.

The all-new LS, which will be launched in the UK early next year, benefits from substantial developments in the Pre-Crash Safety (PCS) system Lexus has already introduced in other models in its range.

The new Advanced Obstacle Detection System can detect a wide range of obstacles ahead of the vehicle, including - for the first time - pedestrians. Depending on weather conditions, it will work during both day and night-time driving.

The Emergency Steering Assist system improves the vehicle's response to driver steering input, selecting the best gear for rapid evasion manoeuvres and increasing the chances of avoiding a collision. It works through close interaction between the car's Variable Gear Ratio Steering (VGRS), Vehicle Dynamics Integrated Management (VDIM) and Adaptive Variable Suspension (AVS) systems.

The new LS 460 is equipped with the world's first driver monitoring system, designed to warn of dangers ahead if the driver takes his or her eyes off the road. A CCD (charge-coupled device) camera is mounted on top of the steering column cover with six built-in near-infrared LEDs, which enable the system to work accurately both day and night.

On started up, the system automatically plots the position of the driver's facial features and measures the width and centre line of the face. This information is used as a reference as it monitors movement of the driver's head when looking from side to side.

If the driver turns his or her head away from the road ahead while the vehicle is moving and an obstacle is detected in front of the vehicle, the system activates a pre-crash warning light and buzzer. If the situation persists, the brakes are briefly applied to alert the driver. And if this still fails to elicit action from the driver, the PCS engages emergency braking preparation and front seatbelt pre-tensioning.

When the Advanced Obstacle Detection System identifies obstacles ahead, the Pre-Crash Safety system assesses the likelihood of collision based on the position, speed, and trajectory of the obstacle. If the collision probability is high, a warning buzzer and red BRAKE! Alert on the multi-function display are activated.

Posted on 30.08.2006
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