Drivers' hours and WTD analysis, without the headaches

What Zohti analyses

Tachograph compliance is one of the most common reasons O-licences end up in front of a Traffic Commissioner. Zohti analyses every regulated dimension of drivers' hours and working time:

• Daily driving — 9 hours, extendable to 10 hours twice per week.
• Weekly driving — 56 hours, fortnightly limit 90 hours.
• Daily rest — 11 hours, reducible to 9 three times between weekly rests.
• Weekly rest — 45 hours regular, 24 hours reduced (with compensation).
• Breaks — 45-minute break after 4.5 hours driving (split 15 + 30 permitted).
• Working time — 48-hour average week, 60-hour absolute weekly cap.
• Night work — 10-hour limit per 24-hour period (extendable by collective agreement).
• Periods of availability (POA) — correctly distinguished from working time.
• Manual entries — start, end and mode validation.
• Missing mileage — gap detection between vehicle and card data.

Download reminders that prevent fines

UK regulations require driver cards to be downloaded at least every 28 days and vehicle units at least every 90 days. Missing a download is a routine roadside and audit finding. Zohti tracks the last download date for every driver and vehicle and warns you before the deadline.

Infringement letters in two clicks

When the analysis flags an infringement, Zohti generates a driver letter explaining what happened, what the rule is, and what the driver needs to do. Drivers acknowledge in the app, and the record is stored against the driver's file — exactly what a DVSA examiner expects to see.

Audit-ready exports

Whether you're preparing for a DVSA visit, a Traffic Commissioner Public Inquiry, or a FORS audit, Zohti produces the reports auditors ask for: per-driver infringement history, missed download log, working time records, and signed acknowledgements.

FAQs

Does Zohti support remote tachograph download?

Zohti accepts uploaded driver (.DDD/.ESM) and vehicle (.V1B/.TGD) files from the major download tools. Native remote download integrations are on the roadmap.

Is this only for HGV operators?

No. Any operator subject to EU 561/2006 or the Working Time Directive can use Zohti — HGV, PSV (coach and bus), and mixed fleets are all supported.

How much does it cost?

The Compliance+ add-on, which includes tachograph analysis, is £9.95 per driver per month (£8.95 annually). See pricing for full details.