Highway Driving Assist Operation
Display and Control
You can view the Highway Driving Assist status in the Driving mode on the cluster. See "LCD Display Modes" in chapter 4.
The Highway Driving Assist indicator will appear as shown below depending on the function status.

(1) Highway Driving Assist indicator, vehicle ahead detection, and selected distance level
Highway Driving Assist Indicator
- Green
: Operating status
- White
: Standby mode
(2) Set speed
(3) Lane Following Assist indicator
(4) Vehicle ahead detection and selected distance to the vehicle
(5) Lane detected or not
Highway Driving Assist System Operating Conditions
The Highway Driving Assist system operates when:
- Driving on a highway main road, and Highway Driving Assist is turned on by pressing the Driving Assist (
) button.
- Entering a highway main road while Lane Following Assist and Smart Cruise Control are operating.
Information
Images and colors in the cluster may differ depending on the cluster type or the theme selected from the cluster.
• Restart after Stop

When Highway Driving Assist is on and 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 stopping, your vehicle will also start. In addition, after the vehicle has stopped for 30 seconds, the "Use Switch or Pedal to Accelerate" message appears on the cluster. Depress the accelerator pedal or press the + switch, - switch, or
switch to resume driving.
• Hands-off Warning

If the driver takes their hands off the steering wheel for several seconds, the "Hold Steering Wheel" warning message appears and a warning sound sounds in stages.
First stage: Warning message
Second stage: Warning message (red steering wheel) and 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) Canceled" warning message appears and Highway Driving Assist and Lane Change Assist are automatically canceled.
Highway Driving Assist Standby Mode
When Smart Cruise Control is temporarily canceled while Highway Driving Assist is operating, the Highway Driving Assist system will enter standby mode. At this time, the Lane Following Assist system will continue to operate normally.
Test yourself
A quick Hyundai Tucson quiz: every answer comes with an explanation and a link to the manual page.