Tachograph Rules Explained for HGV Drivers

Tachograph rules. Every HGV driver needs to know them, but the regulations can feel overwhelming at first. Whether you're new to the industry or just need a refresher, this guide breaks down the tachograph rules UK drivers need to follow in plain English.

WHAT IS A TACHOGRAPH?

A tachograph is a device that records driving time, breaks, rest periods, and other work activities. It's a legal requirement for most HGV and PSV drivers in the UK and Europe. The data helps enforce driving hours rules and protects both drivers and other road users from fatigue-related accidents.

Modern vehicles have digital tachographs built into the dashboard. You use a personal driver card to log in, and the device automatically tracks your driving. Older vehicles might still have analogue tachographs using paper charts.

DIGITAL VS ANALOGUE TACHOGRAPHS

Digital tachographs are standard on vehicles registered after 2006. They're more accurate and harder to manipulate. Your driver card stores 28 days of data, which can be downloaded by DVSA or your employer.

• Digital: personal driver card required, automatic recording, 28-day memory
• Analogue: paper charts, manual annotation, daily charts swapped at end of shift
• Smart tachograph (post-2019 vehicles): GPS tracking, automatic border recording

Analogue charts are still legal but increasingly rare. If you're using them, you need to know how to annotate correctly, mistakes can count as infringements.

DAILY DRIVING LIMITS

The basic rule: you can drive a maximum of 9 hours per day. This can be extended to 10 hours twice in any week. No exceptions.

• Standard daily driving: 9 hours maximum
• Extended daily driving: 10 hours (up to twice per week)
• Continuous driving: 4.5 hours maximum before a break

The 4.5-hour continuous driving limit is critical. After 4.5 hours of driving, you must take a break of at least 45 minutes. You can split this into a 15-minute break followed by a 30-minute break, but not the other way around.

REST REQUIREMENTS

Daily rest is just as important as driving limits. The standard requirement is 11 hours of continuous rest in each 24-hour period. This can be reduced under certain conditions:

• Standard daily rest: 11 hours continuous
• Reduced daily rest: 9 hours continuous (up to 3 times between weekly rests)
• Split daily rest: 3 hours + 9 hours = 12 hours total (must be in this order)

You can't bank rest. Taking a 13-hour rest doesn't let you reduce the next day to 8 hours. Each period is assessed separately.

WEEKLY LIMITS

Beyond daily limits, there are weekly rules to prevent accumulated fatigue:

• Maximum weekly driving: 56 hours
• Maximum fortnightly driving: 90 hours over any two consecutive weeks
• Weekly rest: 45 hours continuous (can be reduced to 24 hours, but must be compensated)

Weekly rest must be taken after no more than six 24-hour periods from the end of your last weekly rest. This catches drivers who try to stack their working days.

INFRINGEMENT CONSEQUENCES

Getting caught with tachograph infringements is serious. DVSA officers can stop you at roadside checks, and your employer can be audited. Consequences include:

• Fixed penalty notices: typically £200-300 for minor infringements
• Court prosecution: for serious or repeated offences
• Driver conduct letters: three strikes can trigger licence review
• Employer penalties: companies can face unlimited fines for systemic failures
• Prohibition: vehicle can be immobilised until rest is taken

Intentionally manipulating tachograph data is a criminal offence. This includes using magnets, unplugging the device, or having someone else use your card. Don't do it, the risks aren't worth it.

PRACTICAL TIPS FOR COMPLIANCE

Most drivers stay compliant without thinking about it once they understand the basics. Here's what helps:

• Start your day knowing how much driving you have left that week
• Use manual entry correctly for any time not captured automatically
• Take breaks before you need them, don't push to 4h29m of continuous driving
• Keep spare charts and a printout paper roll in analogue/digital vehicles respectively
• Download your card regularly (legal requirement every 28 days minimum)
• If in doubt, take more rest, no delivery is worth your licence

COMMON MISTAKES

These trip up new drivers regularly:

• Forgetting to change mode (driving vs other work) at start/end of shifts
• Not recording off-duty activities correctly on manual entries
• Assuming ferry/train time counts as rest (it doesn't always, rules apply)
• Mixing up break and rest requirements
• Failing to annotate analogue charts correctly
• Starting a shift before previous day's rest is complete

Your training should have covered all this, but real-world application takes practice. Ask experienced colleagues if you're unsure, most are happy to help a new driver avoid mistakes they made themselves.