Toyota Corolla: Using the driving support systems / LTA (Lane Tracing Assist)

When driving on highways and freeways with white (yellow) lane lines, this function alerts the driver when the vehicle might depart from its lane or course* and provides assistance by operating the steering wheel to keep the vehicle in its lane or course*. Furthermore, the system provides steering assistance when dynamic radar cruise control with full-speed range is operating to keep the vehicle in its lane.

The LTA system recognizes white (yellow) lane lines or a course* using the front camera. Additionally, it detects preceding vehicles using the front camera and radar.

WARNING

■Before using LTA system

• Do not rely solely upon the LTA system. The LTA system does not automatically drive the vehicle or reduce the amount of attention that must be paid to the area in front of the vehicle. The driver must always assume full responsibility for driving safely by paying careful attention to the surrounding conditions and operating the steering wheel to correct the path of the vehicle. Also, the driver must take adequate breaks when fatigued, such as from driving for a long period of time.
• Failure to perform appropriate driving operations and pay careful attention may lead to an accident, resulting in death or serious injury.
• When not using the LTA system, use the LTA switch to turn the system off.

■Situations unsuitable for LTA system

In the following situations, use the LTA switch to turn the system off. Failure to do so may lead to an accident, resulting in death or serious injury.

• Vehicle is driven on a road surface which is slippery due to rainy weather, fallen snow, freezing, etc.
• Vehicle is driven on a snow-covered road.
• White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
• Vehicle is driven in a temporary lane or restricted lane due to construction work.
• Vehicle is driven in a construction zone.
• A spare tire, tire chains, etc. are equipped.
• When the tires have been excessively worn, or when the tire inflation pressure is low.
• When tires of a size other than specified are installed.
• Vehicle is driven in traffic lanes other than that highways and freeways.
• During emergency towing.

■Preventing LTA system malfunctions and operations performed by mistake

• Do not modify the headlights or place stickers, etc. on the surface of the lights.
• Do not modify the suspension etc. If the suspension etc. needs to be replaced, contact your Toyota dealer.
• Do not install or place anything on the hood or grille. Also, do not install a grille guard (bull bars, kangaroo bar, etc.).
• If your windshield needs repairs, contact your Toyota dealer.

■Conditions in which functions may not operate properly

In the following situations, the functions may not operate properly and the vehicle may depart from its lane. Drive safely by always paying careful attention to your surroundings and operate the steering wheel to correct the path of the vehicle without relying solely on the functions.

• When the follow-up cruising display is displayed (®P.217) and the preceding vehicle changes lanes. (Your vehicle may follow the preceding vehicle and also change lanes.)

• When the follow-up cruising display is displayed (®P.217) and the preceding vehicle is swaying. (Your vehicle may sway accordingly and depart from the lane.)
• When the follow-up cruising display is displayed (®P.217) and the preceding vehicle departs from its lane. (Your vehicle may follow the preceding vehicle and depart from the lane.)
• When the follow-up cruising display is displayed (®P.217) and the preceding vehicle is being driven extremely close to the left/right lane line. (Your vehicle may follow the preceding vehicle and depart from the lane.)
• Vehicle is being driven around a sharp curve.
• Objects or patterns that could be mistaken for white (yellow) lines are present on the side of the road (guardrails, reflective poles, etc.).

●Vehicle is driven where the road diverges, merges, etc.

• Repair marks of asphalt, white (yellow) lines, etc. are present due to road repair.

• There are shadows on the road that run parallel with, or cover, the white (yellow) lines.
• The vehicle is driven in an area without white (yellow) lines, such as in front of a tollgate or checkpoint, or at an intersection, etc.
• The white (yellow) lines are cracked, “Botts’ dots”, “Raised pavement marker” or stones are present.
• The white (yellow) lines cannot be seen or are difficult to see due to sand, etc.
• The vehicle is driven on a road surface that is wet due to rain, puddles, etc.
• The traffic lines are yellow (which may be more difficult to recognize than lines that are white).
• The white (yellow) lines cross over a curb, etc.
• The vehicle is driven on a bright surface, such as concrete.
• If the edge of the road is not clear or straight.
• The vehicle is driven on a surface that is bright due to reflected light, etc.
• The vehicle is driven in an area where the brightness changes suddenly, such as at the entrances and exits of tunnels, etc.
• Light from the headlights of an oncoming vehicle, the sun, etc. enters the camera.
• The vehicle is driven on a slope.
• The vehicle is driven on a road which tilts left or right, or a winding road.
• The vehicle is driven on an unpaved or rough road.
• The traffic lane is excessively narrow or wide.
• The vehicle is extremely tilted due to carrying heavy luggage or having improper tire pressure.
• The distance to the preceding vehicle is extremely short.
• The vehicle is moving up and down a large amount due to road conditions during driving (poor roads or road seams).
• When driving in a tunnel or at night with the headlights off or when a headlight is dim due to its lens being dirty or it being misaligned.
• The vehicle is struck by a crosswind.
• The vehicle is affected by wind from a vehicle driven in a nearby lane.
• The vehicle has just changed lanes or crossed an intersection.
• Tires which differ by structure, manufacturer, brand or tread pattern are used.
• Snow tires, etc. are equipped.
• The vehicle is being driven at extremely high speeds.

• Functions included in LTA system
• Turning LTA system on
• Indications on multi-information display