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. How the Front Airbags Work
While your seat belt restrains your torso, the front airbag provides supplemental protection for your head and chest. The front airbags deflate immediately so that they won't interfere with the driver's visibility or the ability to steer or operate other controls. The total time for inf ...