👓 Glasses Rules 2026 — Spare Pair Mandatory in 8 Countries

Do you need a spare pair? The quick answer

If your licence carries the ‘must wear corrective lenses’ code, you have to wear them to drive — and a handful of countries also make you carry a spare pair in the car. Spain, Switzerland and Slovakia are among those that will fine you for having no backup. The EU baseline is 0.5 visual acuity and a 120° field (Directive 2006/126/EC); get caught, or crash, driving without your correction and you face a fine and possibly void insurance. Country-by-country rules follow.

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EU Minimum Vision Standards

The European Union sets baseline vision standards through Directive 2006/126/EC (the Driving Licence Directive):

Group 1 Licences (Cars, Motorcycles — Category A, B)

Group 2 Licences (Trucks, Buses — Category C, D)

These are minimum standards — individual member states may impose stricter requirements.

Country-Specific Rules

Spare Glasses Requirements

Vision Testing Frequency

The Number Plate Test (UK)

Licence Restriction Codes

If you require corrective lenses, your licence carries a harmonised EU code:

Practical Advice for Drivers Who Wear Glasses

Everyday Driving

1. Keep your glasses clean. Smudged lenses increase glare, especially at night and in rain.
2. Have an anti-reflective coating. This dramatically reduces glare from headlights and streetlights.
3. Carry a spare pair in the car — even if not legally required.
4. Update your prescription regularly. Vision changes gradually, and you may not notice deterioration until it is significant. An eye test every 2 years is recommended.

Night Driving

Night driving is the biggest challenge for glasses wearers:

• Anti-reflective coating reduces halos around lights.
• Yellow-tinted night driving lenses are marketed widely but evidence of their effectiveness is mixed. Some studies suggest they reduce contrast rather than improve it.
• Keep your windscreen clean — inside and out. Dirt and film amplify glare. See our night driving safety tips for more.

Sunglasses for Driving

Driving-specific sunglasses should be:

Contact Lenses

Contact lenses are an excellent option for driving — they provide a wider field of vision than glasses and eliminate frame obstruction. However:

• Carry backup glasses in case a lens falls out or irritates your eye.
• Air conditioning can dry out lenses — use lubricating drops.
• Do not wear lenses longer than recommended, especially on long drives.

Vision and Road Safety Statistics

The impact of poor vision on road safety is well-documented:

• An estimated 2-4% of road accidents in Europe are linked to poor vision.
• A driver with uncorrected 0.3 visual acuity (vs the 0.5 minimum) has a 30% longer reaction distance at motorway speeds.
• At 130 km/h, this translates to an additional 10+ metres of stopping distance.
• Night vision deteriorates faster with age — a 60-year-old needs approximately 3x more light than a 20-year-old to see the same detail.

International Travel Considerations

When driving abroad with glasses:

1. Carry your prescription — if your glasses break, a local optician can make replacements faster with your prescription.
2. Check the spare glasses rule — Spain requires them, and it is good practice everywhere.
3. Verify your licence restriction code is understood in the destination country. EU codes are harmonised; non-EU countries may differ.
4. Pack contact lens supplies if you wear them — brands may not be available abroad.

For country-specific driving rules, see our country driving guides.

When to Stop Driving

If you notice any of the following, stop driving and consult an optometrist:

• Difficulty reading road signs at the distance you used to
• Increased glare sensitivity at night
• Frequent headaches when driving
• Difficulty judging distances
• Blurred vision that does not clear with blinking

Many of these symptoms develop gradually, making them easy to dismiss. Regular eye tests — every 2 years for adults, annually for those over 60 — are the best safeguard.

Conclusion

For the full driving rules in any country, visit our country driving guides. Compare driving requirements between countries using our comparison tool.