The Most Googled Highway Codes In The UK

Even after passing the driving test, many of us still turn to Google to make sense of the Highway Codes. From drivers wondering if it’s acceptable to drive in flip-flops to asking if they can drive with a cracked window screen, some road rules remain confusing.   

To uncover the most common sources of confusion, our team at EzLicence analysed UK search data to reveal the top ten most Googled Highway Code questions. 

These are the rules that drivers are most unsure about and search for clarification on, whether it's the legality of parking on a single yellow line or if you can drive with a flat tyre.

Here are the top 10 most Googled Highway Code questions and what the Highway Code  says about them:

1. Can you park on a single yellow line?

The most searched road rule, with 18,100 monthly searches, is ‘Can you park on a single yellow line?’ A single yellow line on the side of the road means that there are different parking restrictions, which depend on the street signage and potentially the time of day. 

According to Highway Code Rule 238, drivers should not park on a single line outside of restricted hours. Always check the signs to ensure compliance with the rules.

2. Can you drive without a MOT?

The short answer is no. Unless you're driving to a pre-booked MOT test, you must have a valid MOT certificate. 

According to the DVSA, driving without a MOT can result in a fine of up to £1000. If you want to keep the same renewal date each year, you can get your MOT up to a month before it expires.  

But keep in mind that keeping your MOT up to date isn’t just about avoiding fines; it’s about ensuring your car is safe and roadworthy. If you’re ever unsure, take your car to a test centre for peace of mind. 

3. What is the drink driving limit? 

Another one of the most searched questions in the UK is - ‘what is the drink driving limit?’ With 3,600 searches, consuming alcohol whilst driving is clearly on drivers’ minds. 

In England, Wales and Northern Ireland, the legal limit is 80mg of alcohol per 100ml of blood. In Scotland, it’s lower at 50mg. 

However, regardless of alcohol limits for each country, alcohol affects everyone differently. Factors such as what you’ve eaten that day, your weight, and your current stress levels can impact how your body reacts to alcohol. That’s why the metropolitan police and EzLicence recommend following strict guidelines to protect yourself and others: if you’re driving, don’t drink. 

4. Is it illegal to park on the pavement?

Gaining over 2,000 searches a month, it’s clear that pavement parking is a grey area for many drivers. And the answer is, it depends on where you are.

In London, parking on the pavement is illegal in most cases. Outside of London, it’s not always against the law, but it must be done safely. 

According to Highway Code Rule 244, you should not leave your vehicle in a position that could cause an obstruction on the road. If your vehicle causes people to step onto the road, especially those in wheelchairs, then you should move it to a safer place. 

5. Can you drive in these shoes… 

There have been hundreds of searches for footwear like Crocs, flip-flops, and sliders. So, what shoes can you drive in? Technically, there are no illegal shoes, but Highway Code Rule 97 does say your shoes must maintain control of the vehicle. 

That means anything slippery or loose could be risky, and you should opt for something with a better grip. 

6. Can you park on a dropped curb?

Generally, no. 

Rule 243 of the Highway Code advises against parking in front of property entrances or where the curb has been lowered for mobility access. This can block access for driveways, pedestrians, wheelchair users, and those with pushchairs. In some cases, doing so can lead to a penalty charge, especially if it causes an obstruction. 

7. Can you drive with a cracked windscreen?

Another common concern is ‘Can I drive with a cracked windscreen?’ again with 1000 searches a month. According to the Highway Code, you must have a complete vision of the road ahead for your own safety and that of others. 

The size of the crack and its location can affect whether or not it is illegal to drive your car. If the crack is even 10mm, the AA suggests that you have it repaired as soon as possible.

8. Can you drive with a flat tyre?

With 880 monthly searches, it’s clear that many people are unsure what to do in this situation. However, you shouldn't continue driving regardless of where you’re heading. Tyres must be properly inflated to meet the requirements of the Highway Code.

9. Is it illegal to drive with the interior light on?

The myth that driving with the interior light on is illegal persists, as 880 people are asking this question every month. Despite some of us being told by parents that having the interior light on is illegal, it is not actually against the law. 

That said, it's best to use it sparingly. Interior lights can create reflections on the windscreen, reduce visibility, and become a distraction, especially for new drivers. If you’re driving at night, keeping distractions to a minimum can help you stay focused and confident behind the wheel.

10. Can you eat while driving?

Last on this list of most Googled Highway Codes, with 720 searches a month, is ‘Can you eat while driving?’ The Highway Code does not say you cannot eat while driving; so yes - but only if it doesn’t affect your control of the car. If eating causes a distraction or causes you to lose control of the vehicle, it is a motor offence. 

In summary… 

From forgotten MOTs to suitable footwear, UK drivers still have plenty of questions about road etiquette. While some Highway Code rules are obvious, some are worth brushing up on to avoid crossing the line into a penalty. 

Whether you’re wondering if you can drive with a cracked windscreen or if you can park on that single line, checking the rules before you hit the road can save you from fines and unnecessary stress.