Why You Should Not Trust Your Car’s Automatic Systems Completely

12 February 2026

Paul Francis

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Most modern drivers assume that if a feature is labelled “automatic”, it will take care of itself. Automatic lights. Automatic braking. Automatic lane correction. The car feels intelligent, almost watchful.

Car dashboard at night with blurred city lights in the background. Speedometer glows blue. Display shows 8:39. Moody, urban setting.

But there is a quiet issue that many drivers are unaware of, and it begins with something as simple as headlights.

The automatic headlight problem

In fog, heavy rain or dull grey daylight, many cars will show illuminated front lights but leave the rear of the vehicle dark. From inside the car, everything appears normal. The dashboard is lit. The automatic light symbol is active. You can see light reflecting ahead.

However, what often happens is that the vehicle is running on daytime running lights rather than full dipped headlights. On many cars, daytime running lights only operate at the front. The rear lights remain off unless the dipped headlights are manually switched on.

The system relies on a light sensor that measures brightness, not visibility. Fog does not always make the environment dark enough to trigger full headlights. Heavy motorway spray can reduce visibility dramatically while still registering as daylight. The result is a vehicle that is difficult to see from behind, especially at speed.

Under the Highway Code, drivers must use headlights when visibility is seriously reduced. Automatic systems do not override that responsibility. In poor weather, manual control is often the safer choice. It is a small action that can make a significant difference.

Automatic emergency braking is not foolproof

Automatic Emergency Braking, often referred to as AEB, is one of the most widely praised safety technologies in modern vehicles. It is designed to detect obstacles and apply the brakes if a collision appears imminent.

In controlled testing, it reduces certain types of crashes. But it is not infallible. Cameras and radar can struggle in heavy rain, low sun glare, fog, or when sensors are obstructed by dirt or ice. Some systems have difficulty detecting stationary vehicles at high speed. Others may not recognise pedestrians at certain angles.

It is a safety net, not a guarantee.

Lane assist is not autopilot

Lane keeping systems gently steer the car back into its lane if it detects a drift. On clear motorways with bright road markings, they can work well.

On rural roads, in roadworks, or where markings are faded, they can disengage or behave unpredictably. Drivers may not even realise when the system has switched off. Over time, there is a risk that drivers become less attentive, assuming the vehicle will correct mistakes.

It will not.

Cars drive on a wet highway during sunset. The sky is golden, and trees line the road. The scene is viewed through a windshield.

Adaptive cruise control still requires full attention

Adaptive cruise control maintains speed and distance from the car ahead. It is comfortable on long motorway journeys.

However, it does not anticipate hazards like a human driver. It can brake sharply when another vehicle exits your lane. It may not react appropriately to a fast vehicle cutting in. Most importantly, it does not read the wider context of traffic conditions.

It reduces workload, but it does not remove responsibility.

Blind spot monitoring is not perfect

Blind spot indicators are helpful, especially in heavy traffic. They provide an extra warning when another vehicle is alongside you.

But motorcycles, fast approaching cars, or vehicles at unusual angles can sometimes escape detection. Sensors can also be affected by weather or dirt. A physical shoulder check remains essential.

Cameras distort reality

Reversing cameras and parking sensors have reduced low-speed bumps and scrapes. They are undeniably useful.

Yet cameras distort depth perception, and small or low obstacles can be difficult to judge accurately. Relying entirely on the screen rather than physically checking surroundings is one of the most common causes of minor accidents.

The bigger risk is complacency

There is a growing concern among safety researchers about automation complacency. When systems work well most of the time, drivers begin to relax. Attention drifts. Reaction times lengthen.

Modern vehicles are safer than ever, but the technology is designed to support an attentive driver. It is not designed to replace one.

The word “assist” appears frequently in the naming of these systems for a reason. They assist. They do not assume control.

Automatic lights, braking, steering correction and cruise systems are impressive pieces of engineering. They reduce risk. They improve comfort. But they still require a human driver who understands their limits.

Trusting technology is reasonable. Trusting it completely is not.

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Unpacking the Reasons Behind the Scepticism Towards Tesco Clubcard

Gregory Devine
Feb 5, 2024
3 min read

Photo by Samuel Regan-Asante on Unsplash

Tesco is an instantly recognisable brand in the UK. Whilst it might not be the most popular supermarket chain, it's certainly the biggest. Whether you choose to shop at their smaller local stores, their massive supermarkets or you prefer to shop online and have your groceries delivered, there’s one thing you’ll need. A Clubcard.

Without Tesco’s loyalty card, you’ll find yourself spending so much more than you would have had you signed up to Clubcard. It's incredibly easy to do, especially now you can use the app, negating the need for a physical card. The question many people have is why does it allow for such large discounts. Many people on social media are quite sceptical, some say it's a disgrace how expensive items can be without the Clubcard discount. So why not just sign up? Well for many it's a case of privacy.

The reason Tesco wants you to own a Clubcard comes down to data. You may instantly think Tesco simply wants to sell your data but it might not be in the way you first think. This isn’t about selling your name, address and content details. In truth that isn’t very useful to Tesco, especially when the open register has that information already. It's a much more useful collection of data, about your shopping habits.

To a Supermarket, knowing what you buy, how much of it and how often is incredibly valuable information. They can see the different shopping habits in different areas of the country and target certain promotions in certain areas. They can tailor the rewards they offer you based on what you purchase to entice you to spend more money. For example, if you buy a certain brand of biscuits every week but the price increases and you choose not to purchase them anymore, they could give you a personalised offer one week in an attempt to get you to purchase that item once again.

Some people aren’t very comfortable with Tesco doing this and so will choose to not join the Clubcard loyalty scheme. Tesco is aware of this and so will increase the normal prices of items to try and convince you to join Clubcard. If you want to shop online either for click-and-collect or home delivery you have to have a Clubcard. Especially during the pandemic, this must have meant an uptake in people signing up for Clubcard meaning Tesco gained even more data on shopping habits from even more people.

Whilst privacy is an understandable reason to not sign up for Clubcard, you really shouldn’t be too worried. The UK has some of the strictest data protection laws in the world. Anyone who is even remotely involved in handling data will shudder at the sound of GDPR but it's there for a reason. Tesco doesn’t sell your data. They only use it in-house. Your data is connected to you but it's not benefiting anyone other than Tesco and possibly yourself depending on the discounts received. They can see what items are frequently bought together and arrange the aisles accordingly. They can see that you may be more likely to buy one item one week and another item the next but not in the same transaction so tailor your personal discounts week by week. They can see if you prefer to shop at the little or larger stores and build stores in areas of the country based on that data. They can even use it in their banking division to gain a better understanding of you and give discounts on things like car insurance if you are seen as a more trustworthy customer.

The main thing to remember with Clubcard is whilst yes it is collecting your data, it's not being sold outside of Tesco. You will never be worse off as a customer by having one, it will only ever give you discounts. For Tesco, it's essentially a win-win situation. Tesco makes more money by having a greater understanding of how to run their stores and the customer saves money by having discounts that are personalised rather than blanket discounts that cannot be offered on certain products due to the profit they would lose. In truth there's no reason to not have one, your data will be safe thanks to the strong data protection laws in this country.