Honda Civic Owners Manual: Lane Departure Warning Function

Lane Keep Support Function

Provides assistance to keep the vehicle in the center of the lane. When the vehicle nears a white or yellow line, steering force of the electric power steering will become stronger. ...

When the System can be Used

The system can be used when the following conditions are met.  The lane in which you are driving has detectable lane markers on both sides, and your vehicle is in the center of the lane. ...

See also:

Honda Civic Owners Manual. Driver Information Interface
The driver information interface shows the odometer, trip meter, outside temperature indicator, and other gauges. It also displays important messages such as warnings and other helpful information. Switching the Display Main displays Press the (display/information) button and press   ...