As sunny weather becomes more frequent, UK motorists are being urgently warned about the serious penalties that could follow if they fail to carry the right sunglasses in their car.
Under Highway Code Rule 237, drivers must protect themselves from glare, and failing to do so could lead to penalty points, fines, and even court charges.
In severe cases, this negligence can escalate to a £5,000 fine—a risk no driver should take lightly.
Understanding Rule 237 and Its Impacts
Highway Code Rule 237 states: If you are dazzled by bright sunlight, slow down and if necessary, stop. This directive places responsibility on drivers to ensure their vision isn’t compromised.
Without proper eyewear, glare can impair reaction time and visibility, endangering both you and other road users.
Why Sunglasses Matter—and the Risks of Getting It Wrong
While not mandatory, wearing safe and suitable sunglasses is critical. Motorists are expected to carry a spare pair in the glovebox, especially when the sun is strong. Inappropriate eyewear—such as category four sunglasses, small fashion frames, or yellow-tinted lenses—can deeply impair sight and attract serious penalties.
If glare contributes to an accident or impairs control, drivers may face charges of careless or dangerous driving, hauling fines as steep as £5,000, up to nine penalty points, and even possible imprisonment, depending on the severity.
UK Minimum Sunglasses Rule – Key Facts & Penalties
| Category / Rule | Details |
|---|---|
| Highway Code Rule 237 | Drivers must take precautions against glare; slow down or stop if dazzled. |
| Recommended Sunglasses | Category 2 (18–43% light transmission) – safe and legal for driving. |
| Unsafe Sunglasses | Category 4 (very dark lenses, 3–8% light transmission), yellow tints, small fashion frames, or wide side arms. |
| Immediate Penalty | £100 on-the-spot fine + 3 penalty points if driving impaired by glare. |
| Court-Level Penalty | Up to £5,000 fine, 9 penalty points, driving ban, or possible prison time. |
| Insurance Risk | Accidents while driving without proper vision protection may invalidate insurance claims. |
| Expert Advice | Always carry a spare Category 2 pair in your glovebox to stay compliant and safe. |
Consequences of Driving Without Proper Sunglasses
- Immediate Penalty: On-the-spot fine, plus three penalty points for not addressing glare or carrying inappropriate eyewear.
- Court-Level Penalties: A careless or dangerous driving conviction may result in a fine up to £5,000, loss of licence points, or even driving bans and prison in severe cases.
- Insurance Implications: Accidents caused under impaired visibility may invalidate claims, putting both safety and finances at risk.
As the summer sun intensifies, so does the need to prepare your vehicle properly. Carrying a pair of legal sunglasses in your glovebox isn’t just a good idea—it’s a practical safety measure.
Failure to comply with Highway Code Rule 237 and protect yourself from glare could lead to costly penalties, license points, or worse.
Take simple steps now—make sure your vision is protected and you, and everyone on the road, stay safe.
FAQs
Do I have to carry sunglasses in the car?
While not legally required, carrying proper Category 2 sunglasses in your glovebox is strongly advised. Without them, you risk being fined or receiving penalty points if glare impairs your driving.
Are all sunglasses legal for driving?
No—only Category 2 sunglasses (18–43% light transmission) are safe. Category 4, yellow-tinted, small fashion, or bulky-arm frames are often unsuitable and illegal for driving use.
What penalties could I face without the right sunglasses?
You might receive a £100 on-the-spot fine plus 3 penalty points. If the situation escalates into court for careless driving, fines can reach £5,000, more points, or even a driving ban or prison sentence.