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|6th February 2010, 02:42||#31|
Join Date: Jul 2008
Location: New Delhi
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[quote=Ram;1712438]Here's another one.
This happened at Santee, CA near San Diego, CA.
California Highway Patrol Officer Mark Saylor had given his car to the dealer for servicing. The dealer had given him a a temporary loaner 2009 Lexus ES 350. He was driving that Lexus with three of his family when the accelerator pedal got stuck in the floor mat at 192 km/h.
Shutting off the ignition key would have locked the steering wheel, leaving him unable to steer.
In most modern cars stutting off the ignition does not lock the steering wheel. It is only when you take the key out of the lock assembly the steering gets locked ..... however, I am not sure if this system was in place in the Lexus that you are referring to.
|10th February 2010, 14:59||#32|
Senior - BHPian
Join Date: Dec 2005
Location: Singapore, Mumbai, Nagpur
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3.8 million Toyotas recalled
The US National Highway Traffic Safety Administration (NHTSA) feels that the potential culprits/complicating factors, go beyond floor mats.
The type of accelerator pedal in the Lexus that killed policeman Saylor and his family, used a single hinge on the upper end. That made it harder to get the pedal out from under the floor mat.
The Lexus that policeman Saylor was driving had a keyless ignition, which uses a start/stop button that signals embedded system software to start and stop the engine. There is no traditional key to turn to shut the engine off in an emergency. To turn off the engine when the car is in gear, the embedded system software needs to ensure the ES-350's button is pressed and held down for three seconds.
The NHTSA report found that Saylor was traveling at an estimated 100 mph -- that covers a soccer pitch end-to-end in two seconds.
Clearly the software engine-stop button was a design misfit for the 100 mph speed. Embedded system user-interface design is nontrivial !
You can read the NHTSA's report here:
There is an informational video at
Consumer Reports Cars Blog: Toyota may shorten gas pedals in acceleration recall
In final analysis:
The fatal combination was:
The embedded system in Chrysler(since 2003), BMW(since 2005), Audi, Mercedes-Benz and Volkswagen cars cuts off a car's acceleration by design intention, if the driver presses the brake.
This embedded system is called, "Smart Pedal". Logic in the ECU programming disregards accelerator input if the brake pedal is pressed while the vehicle is moving.
Toyota will install "Smart Pedal" software too from the 2011 model year.
|29th July 2016, 18:35||#33|
Join Date: Nov 2009
Thanked: 187 Times
Re: 50 Worst Cars of All Time
An old thread, nonetheless here are the "worst cars of all time"
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