Driving

LKAS Conditions and Limitations

~2min read

The system may not detect lane markings and therefore may not keep the vehicle in the middle of a lane under certain conditions, including the following:

Environmental conditions

  • Driving in bad weather (rain, fog, snow, etc.).
  • Sudden changes between light and dark, such as an entrance or exit of a tunnel.
  • There is little contrast between lane lines and the roadway surface.
  • Driving into low sunlight (e.g., at dawn or dusk).
  • Strong light is reflected onto the roadway.
  • Driving in the shadows of trees, buildings, etc.
  • Shadows of adjacent objects are parallel to lane markings.
  • Roadway objects or structures are misinterpreted as lane markers.
  • Reflections on the interior of the front windshield.

Roadway conditions

  • Driving on a snowy or wet roadway (obscured lane marking, vehicle tracks, reflected lights, road spray, high contrast).
  • Driving on a road with temporary lane markings.
  • Faint, multiple, or varied lane markings are visible on the roadway due to road repairs or old lane markings.
  • The roadway has merging, split, or crossing lines (e.g., such as at an intersection or crosswalk).
  • The lane markings are extremely narrow, wide, or changing.
  • The vehicle in front of you is driving near the lane lines.
  • The road is hilly or the vehicle is approaching the crest of a hill.
  • Driving on rough or unpaved roads, or over bumpy surfaces.
  • When objects on the road (curb, guard rail, pylons, etc.) are recognized as white lines (or yellow lines).
  • Driving on roads with double lines.

Vehicle conditions

  • Headlight lenses are dirty or the headlights are not properly adjusted.
  • The outside of the windshield is streaked or blocked by dirt, mud, leaves, wet snow, etc.
  • The inside of the windshield is fogged.
  • The camera temperature gets too high.
  • An abnormal tire or wheel condition (wrong size, varied size or construction, improperly inflated, compact spare tire, etc.).
  • The vehicle is tilted due to a heavy load or suspension modifications.

Test yourself

A quick Honda Civic quiz: every answer comes with an explanation and a link to the manual page.