5-4. Using the driving support systems
309
WARNING
lThis system detects the condition of the driver through the operation of the steering wheel. This system may operate if the
driver is aware but intentionally and continuously does not operate the vehicle. Also, the system
may not operate if it cannot determine that the driver is not
responsive, such as if they are leaning on the steering wheel.
lSituations in which the driver monitor may not operate properly( vehicles with a driver monitor): �P. 256
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”.
n Operating conditions
This system operates when all of the following conditions are met:
lWhen the LTA is on Or during the Traffic Jam Assist controls( if equipped)
lWhen the vehicle speed is approximately 30 mph( 50 km / h) or more
During the Traffic Jam Assist( if equipped) controls, the system may operate at below 30 mph( 50 km / h).
nOperation cancelation conditions
In the following situations, system operation will be canceled:
lWhen LTA control has been canceled( the LTA switch has been pressed, etc.)
lWhen the dynamic radar cruise control has been canceled
lWhen driver operations are
detected( the steering wheel is held, the brake pedal, accelerator
pedal, parking brake, hazard light switch, or turn signal lever is operated)
lWhen the driving assist switch is pressed while in the stop and hold
phase
lWhen the power switch has been turned from ON to off
lSituations in which some or all of the functions of the system cannot operate: �P. 255
nLTA 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
5
Driving