The Lane Departure Warning system uses an ordinary camera that costs a few dollars. But at the same time, the lane departure warning system can save you tens of thousands of rubles on repair work after an accident.

The software, which works in tandem with the camera, keeps track of how close you are moving from the road surface markings. The system warns you when you are about to cross or simply drive over a lane, but only if you have not used your turn signal.

The lane departure warning system originally emerged as a key tool for. The technology has evolved over the past few years and is now part of most unmanned vehicles in its original form.

The Lane Departure Warning system is also part of the so-called " safety circle": adaptive cruise control with a critical distance tracking system to the vehicle in front, lane departure warning, detection dead center and tracking cars in adjacent lanes.

How does the LDW system work?

The most common LDW system involves a camera mounted high in the car's windshield, often mounted in salon mirror rear view. She removes the space in front of the car while driving. The digitized image is analyzed to identify straight or dotted lines - roadway markings.

In any country, the movement of cars is carried out strictly along the lanes - that is, between the markings, and crossing the markings without a clear purpose is considered a violation local regulations. Therefore, the driver must drive between the two lines. When the vehicle deviates and approaches or runs into road markings, the driver receives a warning: a visual alert plus an audible signal and vibration on the steering wheel or in the seat. However, if the turn signal is on, it is assumed that the driver is intentionally changing lanes, so no alert is given in this case.

More rarely, the lane departure warning system is a set of laser or infrared sensors instead of a camera. Sometimes the automaker uses and rear camera to observe the lane behind the vehicle. This technology is used, for example, on the Nissan Altima.

So, we have a camera on the windshield, filming the area in front of the car. Agree, it would be foolish to use it only for the sole purpose of determining deviations from the lane. Therefore, as a rule, the signal from this camera is transmitted to other systems listed above as a safety circle. But in the context of perfection in our case of the LDW system, the camera can serve several additional purposes:

• Direct Lane Departure Warning (LDW).
• Instead of a simple warning, we can now let the system keep the car in its lane on its own. But this is already a serious swing at. And, in fact, many automakers today allow the owners of their cars to choose in advance, setting up the system - whether it will simply warn you or automatically return you to the lane.
• Collision Warning (FCW). The system monitors the object in front of the vehicle and the speed of approach to it.
• Wiper control windshield. If the image is determined by the camera to be blurry, the algorithm suspects it may be due to rain. Then the system turns on or speeds up the wipers.
• Control for traffic situation. Because road signs and markings are mostly the same, it becomes easy to teach the camera to recognize them and warn the driver about speed limits, no overtaking, and so on.

The obligatory use of direction indicators when making maneuvers in the SDA is not in vain, because a predictable trajectory of movement is one of mandatory conditions road safety. What if the driver was tired, fell asleep and lost control? Then you can roll into a ditch or, even worse, fly into the oncoming lane. In such cases, the row control system should help and protect from trouble.

Often, the lane control system is called the lane keeping assist system. Automakers practice most of all in “naming”. At Volkswagen, it is called simply and concisely - lane assist. And for KIA, for example, it has a more intricate name Lane Departure Warning System (lane departure warning system).

Nevertheless, regardless of the name, all systems work on the same principle. Any lane change must be authorized by the appropriate turn signal. This, firstly, reduces the likelihood that the maneuver will go unnoticed by other road users. And secondly, it says that the driver does not change lanes accidentally, but intentionally, which means that he controls the driving.

All row control systems can be conditionally divided into:

• passive;
• active.

IN passive systems the driver is simply informed of the danger that has arisen. In active systems, the electronics itself can intervene in driving and keep the car in its lane. But here, too, not without reservations. For example, Audi decided to play it safe. Its Lane Assist will not correct the trajectory of the movement if the driver's hands are not on the steering wheel. The system, of course, has passed more than one hundred tests, but the company still believes that the responsibility should lie with the driver, and the technology is only designed to help him in difficult situations.

Renault's video clearly demonstrates the operation of the passive-type row control system:

In Infiniti using the system active type, the correction of the trajectory of movement is carried out not with the help of the steering wheel, but with the help of the brake system. Which means much more complex compared to passive-type systems, its “weaving” into the work of other systems active safety. In case of an involuntary exit from the lane, the proprietary Lane Departure Prevention system first makes sounds and, if the driver does not respond, then “taxis” the car on its own, braking the necessary wheels:

One of the prerequisites correct operation row control is high-quality road markings and if, for example, it is covered with snow, then the system will simply be useless. Therefore, in all models on which it is used, it is provided easy way turning it off.

48 49 ..

Hyundai ix30 2018. Guide - part 48

LCD control

LCD display modes can be changed
using the control buttons.

MODE button for
mode changes

: Switch

MOVE to select
menu item

(3) OK: SELECT/RESET button

to select and cancel
menu item selection

LCD DISPLAY

LCD display modes

The information provided depends on the features selected in your vehicle.

Modes

Symbol

Explanation

(cf. rd way)

This mode shows trip information such as odometer readings,
fuel consumption, etc.
More detailed information given in " Trip computer"in this
chapter.

Turn By Turn (TBT)
(Show turns)

In this mode, the status of the navigation system is shown on the display.

Help Mode

This mode displays the status of the intelligent cruise system.

control (SCC), lane departure warning systems
(LDWS)/Lane Keeping Assistance Systems (LKAS).

For details, see the section " Intelligent system cruise control
(SCC)", "Lane Departure Warning System
(LDWS)"/"Lane Keeping Assistance System (LKAS)" in
chapter 5.

This mode displays information related to the check signal.

driver attention and tire pressure monitoring system.

For details, see "Driver Attention Alert (DAA) Alert" in
Chapter 5 and Tire Pressure Monitoring System (TPMS) in Chapter 6.

(Settings)

In this mode, you can change the settings of doors, lights, etc.

Warning

This mode displays warning messages related to
object detection system outside the driver's field of view, etc.

Change settings after
activation of the parking
brake/shift in
P position

This warning
message is enabled when
trying to select a menu item from
custom mode
settings while driving.
- Automatic box

gear/gearbox with
double clutch

For security reasons, enter
changes to custom
settings by parking
car, using
parking brake and moving
shift lever in
position P (parking).
- mechanical box gear
For security reasons, enter
changes to custom
settings using
parking brake.

reference Information
(reference, if available)
This mode provides
quick guides for working with
systems in the mode
user settings.
Select a menu item, then
press and hold the button
OK.

More about each system

see manual for

operation.

Route mode
computer (Trip Computer
mode)

Trip computer mode
displays information,
associated with parameters
driving,
including fuel economy,
distance meter and
vehicle speed.

For more information, see

"Trip computer" on

this chapter.

OPDE046131/OPDE046132

OAD045161L/OAD045162L

Convenient components for the vehicle

Navigation with indication
turns (Turn By Turn
(TBT) Mode

In this mode, the display
display system status
navigation.

Help Mode

SCC/LKAS/LDWS/DAA

This mode displays
state of the intellectual
cruise control systems (SCC),
warning systems
leaving the lane
(LDWS)/holding systems in
within lane (LKAS)
and attention control systems
driver (DAA).

More information

see description

relevant system in

chapter 5.

Tire pressure

This mode displays
information related to
pressure control system in
tires.

For details, see the section "System

tire pressure monitoring

(TPMS)" in Chapter 6.

To prevent emergencies a Lane Assist driver assistance system has been created to help the driver keep moving in the right direction. The device functions effectively only when the vehicle is moving along pavement with high quality stripes.

• At different manufacturers The system has its own characteristics and differs in the name. For Volkswagen, SEAT and Audi lines - Lane Assist. Honda and Fiat - Lane Keep Assist System, Mercedes - Lane Keeping Assist, Toyota - Lane Monitoring System, Ford - Lane Keeping Aid, Nissan - Lane Keeping Support System, Volvo, Opel, Kia, Citroen and BMW - Lane Departure Warning System.

The system assists the driver in two ways: passive and active. The first method is aimed at warning the driver if he starts to deviate from his chosen lane. The second one is active together with the first one and automatically corrects the direction of movement.

Lane assist system design electronic mode independently affects the control button, which includes the system itself, the video camera, the mechanisms that execute the command and the control unit. The control button can be located on the turn signal switch handle, on the center console, or directly on the car's instrument panel.

The camcorder is designed to record images in the area of ​​vehicle movement, and also digitizes data. It is connected to the combined block, which is fixed on front glass behind the outside rearview mirror. Devices that are involved in the entire executive system Lane driving aids are the vibration signal on the steering wheel, the power steering motor, the horn and the control light.

Data about the functioning of the system is sent to dashboard where they are controlled by a light bulb. The driver receives a warning signal from the steering wheel, which begins to vibrate after the vibration is generated by the electric motor mounted in the steering wheel. In addition, the warning is accompanied by a sound and light signal.

To eliminate fogging and ice formation on the camera screen in automatic mode works a heating element located on the windshield.

The direction of movement is adjusted by force by adjusting the operation of the steering with the help of a power steering, or by one-sided braking of the wheels.

An active system during its functioning solves four main tasks:

• Determining the direction of the lane line.
• Notification of the operation of the system by lighting up the light bulb.
• Adjustment of the direction of movement.
• Gives a warning signal to the driver.

The situation in front of the car is perceived by the light-sensitive camera grid, where it is converted to a black and white image, which is then processed electronic unit management.

The purpose of the control unit is to determine the location and recognition of the marking strip, its quality, width and curvature, to calculate the location of the car on the strip. As a result of the calculations, the steering wheel is controlled through brake system, and if the desired effect of holding the car is not achieved, the driver receives a warning in the form of steering wheel vibration or a light and sound signal.

It must be borne in mind that the torque applied to the steering mechanism through wheel braking is small and can be easily overcome by the driver. We must also not forget that when changing traffic from one lane to another, it is necessary to turn on the direction indicators, otherwise the lane control system will block the maneuver. If for some reason the marking strip is missing, the system does not work.

LDWS - Lane departure warning system) is an automotive option that allows the driver to stick to the selected road lane, preventing uncontrolled exit beyond its borders.

What is LDWS and what is it for?

The technology is designed to warn the driver that his car is about to leave the selected lane. Today, LDWS has grown from being an exclusive feature luxury cars into a feature that can be found in many modern production models Vehicle.

The importance of the lane departure warning system also continues to grow as distracted driving has become the scourge of modernity and more and more traffic accidents in the world is due to the fact that the driver was simply distracted and deviated from his lane. This happens both due to the inattention of the driver, and due to overwork or a banal sleep at the wheel.

How does the lane departure warning system work?

While car manufacturers may use slightly different technologies for their warning systems, the essence of them remains the same. Be on a given trajectory of movement.

With cameras usually mounted next to the rearview mirror and/or in the front of the vehicle, on-board computer can determine the markings on the road. The vehicle then calculates the vehicle's position between the lane markings and controls the vehicle's movement along the road.

If the vehicle starts on one of these lanes and the turn signal is not turned on, the computer will warn the driver that the vehicle is about to veer from the selected lane by sound signal or in some other way, such as vibration of the steering wheel or seat, or a deafening sound.

Cadillac made the driver's seats in their cars vibrate on the side where the car is in contact with the marking line. Nissan decided to kill two birds with one stone, or rather one camera. The rear view camera also monitors road markings and the trajectory of the car relative to it. IN latest models cars presented on, the warning system discussed in this article was present in almost every new car model.

Some cars even use the car's braking system to help steer the vehicle back into its lane. Although some systems behave more aggressively than others, the driver can still make some changes to them.

Why do I need a lane departure warning system?

Distraction can lead to the most unfortunate consequences. And in our time, there are a great many reasons that can distract us when we are driving a vehicle. Food, drinks, a stereo system, and even hands-free conversation can take your attention away from navigating the road.

It takes only a few seconds for a 2-ton vehicle to leave its path without the driver noticing it, the consequences of this can be very deplorable. Similar systems provide an unobtrusive reminder to the driver about what is a priority on this moment, and advise him to focus all his attention on what he is currently doing: driving.

Are there any disadvantages to such systems?

An unobtrusive reminder of some automotive systems, may be too intrusive for the driver. Lane Departure Warning is one of them. In some machines this system tuned so sensitively that you get the impression that you are about to lose control of the steering due to excessive vibration and warning sounds.

Novice drivers may not like the fact that the computer constantly tells them that they are rushing from side to side, although drivers from adjacent lanes will only be grateful for this system. It is also worth noting the fact that some systems have difficulty in working in dark time days and at bad weather, at the very time when the driver needs this system the most. In this case, you can draw your attention to the night vision system in the car, which we wrote about, but that's a completely different story.

Also, false alarms occur in the system, for example, when driving through a construction zone, where the lanes are displaced and the marking lines do not coincide with the trajectory of the car.

In addition, the presence of a lane departure warning system may unnecessarily increase the confidence of some drivers that they may be distracted by other large quantity things while they are driving a vehicle. The safety device must not be abused.

Which vehicles offer this system?

Lane Departure Warning has become mainstream in last years, almost every car manufacturer provides their own warning system in their cars, although they have completely different names, for example Lane Departure Warning(lane departure warning), Lane Assist(heading assistant) or driver Assist(assistant driver). As a rule, these systems are bundled with other car options, such as active cruise control or a blind spot detection system, from which elementary can save. You can meet the LDWS system in Nissan vehicles 2013 Juke SL AWD, 2013 Mercedes-Benz G63 AMG , various models Audi, Toyota and other car brands.

Summarize

Of course, it is a system that can make driving safer and that, if necessary, can "put you in your place." Of course, there would be no need for it at all if the driving process itself were in the first place for drivers, and not listening to music, talking on the phone, looking at a pair of pretty legs or sleeping at the wheel, but that's a completely different story.