Highway Driving Assist operating
Highway Driving Assist operates when:
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Driving on the main road of highways (or motorways), and turning on Highway Driving Assist by pressing the Driving Assist button.
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Entering the main road of highways whilst Lane Following assist and Smart Cruise Control are operating.

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When Smart Cruise Control is operating whilst driving on the main roads of highways (or motorways), Highway Driving Assist will operate.
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When entering the main roads of highways (or motorways), Highway Driving Assist will not turn on if Lane Following Assist is turned off even when Smart Cruise Control is operating.
Restarting after stopping

When Highway Driving Assist is operating, your vehicle will stop if the vehicle ahead of you stops. Also, if the vehicle ahead
of you starts moving within 30 seconds after the stop, your vehicle will start as well. In addition, after the vehicle has
stopped and 30 seconds have passed, the 'Use switch or pedal to accelerate' message will appear on the cluster. Depress the
accelerator pedal or operate the + switch, - switch or (
) switch to start driving.
Hands-off warning

The hands-off warning appears when the function detects that the driver's hands are not on the steering wheel whilst Highway Driving Assist is in work.
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First warning: warning message
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Second warning: warning message with warning sound

If the driver still does not have their hands on the steering wheel after the hands-off warning, the 'Highway Driving Assist (HDA) cancelled' warning message will appear and Highway Driving will be automatically cancelled.
Highway Driving Assist standby
When Smart Cruise Control is temporarily cancelled whilst Highway Driving Assist is operating, Highway Driving Assist will be in standby state. At this time, Lane Following Assist will operate normally.