The log book is the least glamorous record in a fleet and the one most often reached for. It is what you open when a client queries distance, a driver queries earnings, an insurer queries an incident, or you are trying to work out why one vehicle costs more than an identical one.
Most fleets keep something. Fewer keep something usable.
What a usable entry contains
| Field | What it settles |
|---|---|
| Date | Everything else hangs off it |
| Vehicle number | Obvious, and routinely missing on shared books |
| Driver | Who was responsible for the vehicle that day |
| Opening odometer | The start of the day’s arithmetic |
| Closing odometer | The end of it |
| Kilometres run | Closing minus opening — the number everything else divides by |
| Trip references | Which jobs those kilometres belong to |
| Fuel filled | Litres and amount, not just amount |
| Tolls and parking | Reimbursable, and forgotten if not written down |
| Driver allowance | Batta, where it applied |
| Notes | Breakdowns, waiting, anything unusual |
The three fields that actually settle disputes
The two odometer readings. Almost every argument about distance ends here. A client says the trip was shorter; a driver says the day was longer. The opening and closing readings are the only evidence that is not somebody’s recollection — provided they were recorded at the time rather than reconstructed at the end of the week.
Fuel in litres, not only rupees. Rupees tell you what was spent. Litres divided by kilometres tell you the vehicle’s actual consumption, and a consumption figure that drifts is the earliest warning you get of a mechanical problem or of fuel going somewhere else.
Trip references. Without them the log records that a vehicle travelled 180 kilometres. With them it records that 140 were billable and 40 were dead running — which is the difference between a record and a report.
The number nobody calculates
Billable kilometres divided by total kilometres, per vehicle, per month.
That single ratio tells you more about a fleet than any other figure. A vehicle at 90% is earning on nearly everything it does. A vehicle at 60% is spending four kilometres in ten going somewhere that pays nothing, and no rate increase will fix it because the problem is positioning rather than pricing.
You cannot compute it without trip references in the log. Which is why most fleets have never seen it.
Why paper log books fail
Not because paper is bad. Because of three things that happen to every paper log at scale:
They are filled in at the end. A driver writing Friday’s readings on Friday evening is writing what they remember, and the odometer photograph nobody took is the evidence nobody has.
They live in the vehicle. Which is exactly where they are when you need to answer a question from the office, and exactly where they are when the vehicle goes to the workshop for a week.
They are never aggregated. Thirty books across thirty vehicles is thirty sources. Nobody adds them up, so the per-vehicle picture that would justify the whole exercise never gets built.
None of that is a discipline failure. It is what happens when a record is created in one place and needed in another.
What good looks like at scale
- Odometer captured at the trip, not at the end of the day — and where the trip type warrants it, with a photograph rather than a typed figure
- Implausible readings challenged at entry, not discovered at month end
- Kilometres attached to the trips that produced them, so billable and dead running separate themselves
- The whole thing queryable per vehicle, because the per-vehicle number is the one that changes decisions
The exercise worth doing this week
Take one vehicle and last month. Work out its billable ratio. Then do the same for the vehicle you believe is your best.
If you cannot produce either number in under twenty minutes, that is the gap — and it is the same gap that makes the disputed-distance conversation with a client so unwinnable.
Our page on trip sheets and duty slips covers odometer capture against the trip, and what a kilometre costs covers what the resulting numbers are for.