Thirty seconds. That's all the tachograph part of your daily check should take if you know what you're looking at. Less than the time it takes the cab heater to warm up on a February morning at DIRFT.
But I keep watching drivers skip it. Or do it wrong. And then I watch the same drivers ring me, baffled, two weeks later, about a tacho infringement that came out of nowhere.
It didn't come out of nowhere. It came from Monday morning, thirty seconds you didn't spend.
What you're actually checking
Before you move the vehicle — I mean before the wheels roll a single turn — there are four things on the tacho head you need eyes on. In this order:
- Is your card in?
- Is the mode selector on the right symbol?
- Does the display show any warning flags from the previous driver?
- Is the time on the unit showing UTC, not UK local?
That's it. Four things. Ten seconds a check if you're slow, two seconds if you've done it a thousand times. And if any one of them is wrong, you don't move.
Card in — and in the right slot
Sounds obvious. It isn't. I've watched a mate running out of Lymm insert his card into the passenger-side slot on a DAF XF because the driver-side slot had a bit of grit in it and he couldn't be bothered to sort it. Card went in. Card read as second driver. He drove 180 miles back to Rugby with every minute of it recorded as "second crew member" on his card and zero driving time logged.
DVSA pulled him on the Watford Gap off-slip three weeks later for a random tacho download. They found 180 miles of driving that didn't match any card record on the vehicle. It's not that he'd been driving illegally. It's that his card said he hadn't been driving at all, and the vehicle unit said someone had.
That's a manipulation offence on paper, even if the manipulation was accidental. He spent six hours at a DVSA office explaining it.
Driver card goes in slot 1 — that's the slot closest to the driver, usually on the right on a UK cab. Second driver, if you've got one, goes in slot 2. If slot 1 won't take your card, the vehicle has a defect, and you're not driving it until it's fixed. You report it on the PMI sheet, you tell the transport manager, you wait. You don't bodge it into slot 2.
Mode selector — the one that catches everyone
This is the big one. The reason I'm writing this post, honestly.
Every digital tacho head has four modes, set by a button on the unit. Different manufacturers — Continental, Stoneridge, Actia — put the button in slightly different places and use slightly different symbols, but the modes are always the same:
- Driving (the wheel/steering wheel symbol) — automatic when the vehicle moves. You don't pick this one, the tacho does.
- Other work (the two crossed hammers) — what you select when you're on shift but not driving. Walkaround, strapping loads, waiting for a gatehouse, refuelling.
- Period of availability (the square/envelope symbol, depending on make) — what you select when you're on shift but effectively waiting with no control over how long. Ferry queue, tipping queue, that kind of thing.
- Rest (the bunk symbol) — break, rest, off-duty.
The mistake I see every single week — at DIRFT, at Lymm, at Stafford Services northbound — is drivers doing their walkaround with the mode selector still on "rest." They've ended their previous rest period, started the engine briefly to move the vehicle to a pump, and the tacho's defaulted back somewhere. They don't check. They do a ten-minute walkaround. They refuel. They crack on.
Ten minutes of "other work" just got logged as "rest." Which is fine, you might think. Rest is rest.
No. Rest has to be continuous. If you log ten minutes of rest, then immediately drive for four hours, the tacho software is looking at a broken rest period. Your last "proper" rest was nine hours forty minutes ago, not eleven hours. You're over. You're in an infringement.
Conversely — and this one is worse — some drivers finish a shift, forget to end their working day, and leave the mode on "other work" while they go home and sleep in their own bed. The tacho thinks they've been working through the night. When they come back on shift in the morning, the daily rest requirement hasn't been met on the record. The first load of the day turns into a £200 fixed penalty at the roadside.
Fix: when you end your shift, select rest. When you start your shift, select other work. When you sit down in the cab with the engine off to drive, the mode flips to driving automatically the moment the wheels turn. Simple when you say it. I still see drivers get it wrong every week.
Warning flags from the previous shift
Most vehicle units show a little warning triangle or a specific infringement code when the last driver's session ended with a rule breach. On a Continental VDO, it's usually shown as a flashing icon for the first minute after you insert your card. On a Stoneridge, it's a one-line summary on the driver-activity screen.
If you see a warning, don't ignore it. It's not yours. But it tells you something about the vehicle.
Twice in the last year I've seen warnings that turned out to be a tacho calibration issue — the vehicle was due its six-year calibration check and the data was drifting. That's a PG9 waiting to happen if DVSA pulled the vehicle while I was driving it. Reported it to the transport manager both times. Both times the vehicle came off the road that day for a recalibration.
The calibration window is 24 months for standard compliance, with periodic re-calibrations and a new seal at that point. If the plaque inside the cab door shows a calibration date more than two years old, say something. Don't drive it.
UTC, not local time
One for the newer drivers. The tacho head runs on UTC — Coordinated Universal Time, which is the same as GMT. It does not switch to British Summer Time in March, and it does not switch back in October.
In summer, the UTC time on the unit will be one hour behind your watch. That's correct. Don't "fix" it. Don't ask the TM to fix it. Every tacho in Europe runs on UTC for a reason — so that infringement analysis is consistent across time zones and across daylight saving.
What you do have to do, on the days when you start a shift in summer, is record your activities with a UTC mental offset. If you start at 06:00 local in July, your tacho records 05:00. That's fine. That's the rule. Everything still counts correctly.
What catches people: they look at the unit in July, see 05:00, and think "that's wrong, it's six o'clock," and they manually input a different start time. The manual entry is now out of sync with the vehicle unit's internal clock. Infringement flags go up on the download.
The manual entry bit — where it gets fiddly
When you insert your card at the start of a shift, the tacho will ask you to enter your activities for the period since your card was last out. This is the manual entry screen, and it matters.
If you finished your last shift at 17:30 the previous day and you're starting today at 06:00, the tacho knows there's been a 12.5-hour gap with no activity recorded on your card. It'll ask: was that all rest? Was part of it other work? Did you drive another vehicle?
Answer honestly. If it was all rest, say so. If you spent the Sunday doing CPC training, put that in as other work with approximate start and end times. If you drove your car home from the yard, it doesn't matter for tacho purposes — that's private driving, not in scope.
Get the manual entry wrong and you've either overstated your rest (possible infringement upstream) or created a gap the analyser can't reconcile. Take the extra thirty seconds.
The weekly and monthly bit — downloads
This isn't strictly the daily check, but it's close enough that I'm including it. Your operator has to download your driver card data at least every 28 days, and the vehicle unit data at least every 90 days. Most decent fleets download weekly just to stay ahead of it.
If you're an agency driver working for multiple yards, this gets messy. Your card is downloaded by whoever you worked for most recently — but you, personally, are on the hook for your own compliance. I check my own downloads monthly using a home card reader. It's not expensive. A digifobpro or similar is about a hundred quid and it reads your card at home. Takes sixty seconds.
The data has to be kept for at least 12 months. If DVSA download your card at the roadside and see 12 months of clean records, you're in a very different conversation than if they see gaps.
A mate's story — the one that sharpened me up
A driver I know, running flat-deck out of Immingham, thought he was being sensible. Every Friday, end of shift, he'd pop his card out, stick it in his wallet, and go home for the weekend. Monday morning, card back in, off he went.
Problem: he wasn't doing the manual entry properly. He'd tell the tacho the weekend was all rest, which was true. But he'd been selecting "other work" on Friday afternoon before popping his card, because he'd been helping the yard foreman with a load. He'd forget to switch back to rest before pulling the card.
Over six months, this made his driving pattern look erratic. Not illegal — just scruffy. Monthly download reports flagged him as "inconsistent activity recording." His operator put him on a remedial training course, which came out of his training budget.
Thirty seconds on Friday. That was all it would have taken.
The checklist, printed
If it helps — and it helps me — print this on a bit of laminated card, stick it inside the driver-side visor:
- Card in slot 1. Verified.
- Mode on other work (hammers) if walkaround, rest (bunk) if off duty.
- No warning flags on display.
- UTC time as expected (1h behind local in BST, matches local in GMT).
- Manual entry completed for the gap since last card-out.
- Calibration plaque in date.
Six lines. Ten to thirty seconds. It pays for itself the first time it saves you a £200 fixed penalty, which on a current agency rate is roughly a day's work.
Honest CTA
If you want the whole daily check, weekly rest, fortnight totals, and CPC expiry in one place instead of in your head, ShiftOwt tracks 561/WTD compliance automatically — £5.99/mo for drivers, agency pricing on request. I built it because I was sick of doing the maths in a notebook in a lay-by at Stafford Services.