Lane Keep VS Lane Follow Assist - What’s The Difference? (And Does One Suck??)

In this short video Gabi walks us through the commonly confused lane keep and lane follow assist. Still confused? More info down below!

Lane Keep Assist (LKA) and Lane Follow Assist (LFA) are both driver assistance features designed to help you stay within your lane, but they function a bit differently:

1. Lane Keep Assist (LKA):

How it works: LKA uses cameras to detect the lane markings and will provide corrective steering input if you begin to drift out of your lane unintentionally.

Primary function: It activates when you are veering off the lane and will gently steer you back towards the centre, and give you an audible alert, but only if it detects that you’re not making an intentional lane change (i.e., without signaling).

When it engages: Typically kicks in when the car senses that you’re about to cross over lane markings.

2. Lane Follow Assist (LFA):

How it works: LFA also uses cameras to track lane markings, but it continuously monitors your position within the lane and actively adjusts the steering to keep the vehicle centered.

Primary function: Unlike LKA, LFA provides continuous steering assistance to help you stay in the middle of the lane, especially useful on highways or long stretches of road.

When it engages: It is active throughout your drive (if turned on), not just when the vehicle is drifting out of the lane.

Key Differences:

• LKA is more reactive, helping you when you drift out of the lane.
• LFA is proactive and keeps you centered within the lane throughout the drive.

LFA is typically more advanced and adds comfort on longer drives, while LKA is more about preventing lane departure.

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[Yanquetino]

I use both, and never have a problem. What I really appreciate is that the ADA system truly *assists* me —rather than taking control of the car and then expecting me to assist it! I can still steer around road kill, potholes, tumbleweeds, etc., without disengaging the system —which would happen in a Tesla.. After those obstacles are in the rear view mirror, the ADA system continues to work as intended. No need to re-engage it!

[foliuke]

You can activate / de-activate BOTH of these functions using the same button on the steering wheel. For one, you tap the button, for the other, you press and hold until the icon disappears from the cluster. No need to go to the menu. Kia Nerd here 🤓 Thanks for your amazing videos!

[Sami]

I had the pleasure (or displeasure) of using both on 2 different rentals (neither was a Hyundai/Kia) I hated lane keeping assist Way too intrusive Love lane follow assist I can rest my hands on the wheel & let the car turn while still being able to jump out of my lane if necessary (it was necessary Nothing too dangerous thank God) Nice job explaining the difference Gabi

[Mike-tqjd]

Both are great in city and urban settings. In the rural two-lane setting I prefer to be closer to the shoulder and not in the center of the lane. Love it on the interstate! Thanks for the menu help!

[jaydieeff]

This is very helpful. I just bought a new Seltos and was confused between those two. Thanks a lot, Gabi :)

[adelramosca]

I keep my LFA always on for city driving. Both LFA and LKA in the 401. For people new to the features, using either or both would maybe be confusing (and scary) sometimes. But you'd definitely feel the comfort of driving when you get used to it!

Countryside driving-- I didn't notice the difference, I got distracted by the leaves changing colors and horses and ranches in view passing by Hamilton 🤩... thanks for the advice yesterday, Gabi!!

[bobdavis]

I took my hands off the wheel and it moaned and vibrated furiously! So, just turned that off and pulled the related harnesses out. Lane change is still always active! It's a big help. No more emergency brake locking up when I don't put the seat belt on. Clue, under the front seats.

[computerguymichael]

I love both of them. They are life savers.

[Anonymous-bsit]

I love LFA! It's not too intrusive and is capable enough to provide steering assistance on highways. I use it when I don't want full HDA2 capability.

[SteveDuqueno]

Great job Gabi, I’m sure you know this, but it wasn’t on the video.. If you press & hold the LFA button it disables the Lane Keep Assist, it’s quicker and easier than going in to the menus every time. Here in the UK, LKA reactivates every time you start the car 🙄

[EduardoFlores-sy]

Thanks for today's video a fantastic saturday

[tolson]

I have had my Sportage HEV Prestige since mid-March and I have become very familiar with these two modes. I have found that the Lane Keeping is more of a lane departure warning/prevention similar to what I have on my Fusion. Lane follow is designed to keep you in the middle of the lane. They are very different their intent. Lane keeping is intended to keep you from driving off the road. Lane Following is a driving assist system to keep your car in the middle of the road. NOTE, Lane Following has limitations, if a curve is too sharp, it will disconnect, it can be confused by off ramps. It does not take long to learn its weaknesses and be ready for them.

I use both ALL the time.

[whoisdyl]

My new go to channel learning about my car 😊

[sanjeevp]

Thank you, Gabby! I think you should do a video on all the safety features in Kia vehicles, especially those coming in the new vehicles.

[AndrewRidley-mo]

I use both on the highway with no issues. Both turned off from the steering wheel around town.

[SilvoTheMindShifter]

You do incredible reviews. Keep up the good work. Fun, and detailed reviews. 👌😎

[johnmoore]

Lane Follow works great on my Hyundai Santa Cruz. I turned off Lane Keep. I believe if you press and hold the steering wheel button it switches between the two. If you just press the button once it turns LFA on/off. LFA is like cruise control for your steering it works best on the highway. In the city there are too many gaps in lane markers so it randomly shuts off. When this happens the icon goes from green to white but there is no audible warning so you gotta pay attention. The vehicle will sort of drive itself pretty good with LFA. It reduces driver fatigue since it centers the vehicle without you doing constant minor corrections all the time.

[mupwangle]

In the UK (and I think the EU as well) most, if not all, of the safety functions like lane keep assist and speed assist are permanently enabled by default on vehicle start. You can turn LKA off (using the long buttons push as @folluke said) and the speed assist by holding the radio mute button for 3 seconds but the next time you start the vehicle they'll be back on.

I find LKA problematic as 1. in the UK there's no rule that you have to indicate to return to the correct lane after an overtake (although on busy roads it's curteous), 2. you would never indicate when passing parked cars on an empty residential street. and 3. roadworks often have conflciting road markings due to temporary paint. In a Seat I was nearly pushed into oncoming traffic on roadworks in Tenerife and my wife in our Hyundai was nearly pushed off the road due to a triple central line spray painted on a bridge in Dundee. Anything that unexpectedly nudges your steering is inheritly unsafe. First thing I do when I set off is turn it off. I only found the button shortcut recently so it's much less annoying.

This isn't a Hyundai/Kia thing, it's an EU/UK thing as it's the same experience in other new cars I've driven in the UK and EU such as VW/Seat.

[James-ploy]

Had a bad experience in the first car I had with LKA, a MKV Supra. I was going down a road and all of a sudden the car to my left starts swerving into my lane. I quickly executed an evasive maneuver by instinctively steering/moving my car into the right lane to avoid a collision but since I had no time to put on my turn signal in that split second, the car thought I was drifting out of my lane and therefore began to pull me back into my lane and directly into the path of the car entering my lane. I had to brake really hard in order to avoid him. Ever since then I turned off my LKA.

[jimh]

After two months of driving, I feel that there is too much over-correction with the LKA system. It's downright annoying at times. I'm going to turn it off and keep the LFA system on.