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6-2. Using the safe driving support functions
Summary of the system
Operation of this system is separated into 4 control states. Through control state
"warning phase 1" and "warning phase 2", the system determines if the driver
is aware and responsive while outputting a warning and controlling the vehicle
speed. If the system determines the driver is not responsive, it will operate in
control state "deceleration stop phase" and "stop hold phase" and decelerate and
stop the vehicle. It will then operate continuously in "stop hold phase".
INFORMATION
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Operating conditions
This system operates when all of the following conditions are met:
When the LTA is on
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When the vehicle speed is approximately 50 km/h (30 mph) or more
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Operation cancelation conditions
In the following situations, system operation will be canceled:
When LTA control has been canceled (the LTA switch has been pressed, etc.)
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When the dynamic radar cruise control has been canceled
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When driver operations are detected (the steering wheel is held, the brake pedal,
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accelerator pedal, parking brake, hazard light switch, or turn signal lever is operated)
When the driving assist switch is pressed while in the stop and hold phase
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When the power switch has been turned from ON to OFF
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Situations in which some or all of the functions of the system cannot operate:
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LTA control when operation is canceled
When emergency driving stop system operation is canceled, LTA control may also be
canceled.
Warning phase 1
If driving operations are not detected after the hands off steering wheel warning
operates, a buzzer will sound intermittently and a message will be displayed to
warn the driver, and the system will judge if the driver is responsive or not. If driving
operations, such as holding the steering wheel, are not performed within a certain
amount of time, the system will enter warning phase 2.
Warning phase 2
After entering warning phase 2, a buzzer will sound in short intervals and a
message will be displayed to warn the driver, and the vehicle will slowly decelerate
to approximately 30 mph (50 km/h).
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