Synthetic depot SYN-01: one planning day
A shortened Health Check report, produced by running Trangent's checks and optimiser on a synthetic depot. Every figure below was calculated by Trangent, not written by hand. A real report covers a full week of your plans, with your costs and road distances.
The day cost an estimated £22,369 across 63 runs. Contractors ran a third of the pallets but took 52% of the cost, while five own trailers stood unused all day.
- Contractor runs cost £34.92 per pallet; own-fleet runs cost £17.07.
- 15 runs left the depot under half full, costing £4,756 between them.
- One delivery arrived 32 minutes after the store's window closed.
- The optimiser found £460 of savings that keep every rule the plan kept. The late arrival needs fixing before the improved plan can be recommended as a whole.
63 runs, 959 pallets, 8,280 km
Contractors carried 35% of the pallets and 52% of the cost
Five own 13.6 m ambient trailers were not used at all on a day when 20 runs went to the contractor at £300 a run plus mileage.
The five most expensive runs
| Run | Trailer | Who | Stops | Pallets | Distance | Fill | Loaded km | Cost |
|---|---|---|---|---|---|---|---|---|
| run_syn_0030 | 13.6 m ambient | Contractor | 3 | 14 | 279 km | 54% | 58% | £758.08 |
| run_syn_0014 | 13.6 m ambient | Contractor | 3 | 14 | 200 km | 54% | 81% | £680.74 |
| run_syn_0046 | 13.6 m multi-temp | Contractor | 3 | 17 | 179 km | 71% | 81% | £679.05 |
| run_syn_0036 | 13.6 m ambient | Contractor | 3 | 16 | 196 km | 62% | 28% | £673.72 |
| run_syn_0058 | 13.6 m multi-temp | Contractor | 4 | 14 | 193 km | 58% | 93% | £645.24 |
All five are contractor runs. Run 0036 drives 72% of its 196 km empty.
Part-empty trailers
15 runs left under half full: 9 multi-temp and 6 ambient, 11 of them on the own fleet. Between them they carried 120 pallets and cost £4,756.29. The least full carried 4 pallets on a 24-pallet multi-temp trailer.
One hard rule broken, one soft rule under pressure
Arrival after the store's window closed
Hard rule · time windowRun run_syn_0003, stop stp_syn_00009, store loc_syn_store_0036: planned arrival 08:02 against a 05:30 to 07:30 window, 32 minutes late. Times are UK local time.
- 1 breachDelivery windows. The arrival above. Every other stop arrives inside its window.
- PassedTrailer capacity. No run carries more than its trailer holds.
- PassedTemperature. Chilled produce travels only on multi-temp trailers.
- Soft rulePrefer own fleet. 20 contractor runs against this rule; its penalty of £500.00 shows the pressure but is not added to the cost.
- Not checkedDrivers' hours. The plan has no driver shift IDs, so each run can't be tied to a driver. Send them and the core daily limits are checked.
£460 a day, every rule the plan kept still holds
The optimiser tried 391 changes and kept the two that lower the cost without breaking any rule the plan kept.
| # | Change | Cost before | Cost after | Saving |
|---|---|---|---|---|
| 1 | Run run_syn_0036 from the contractor to the own fleet | £22,369.31 | £21,989.31 | £380.00 |
| 2 | Run run_syn_0038 from the contractor to the own fleet | £21,989.31 | £21,909.31 | £80.00 |
| Total | £22,369.31 | £21,909.31 | £460.00 · 2.1% |
Why the improved plan isn't recommended as a whole yet: the plan as uploaded already breaks a hard rule (the late arrival in section 3). Trangent only recommends a plan that meets every hard rule, so fix the arrival first and run the check again.
What to do first
- Fix the late arrival at store 0036RuleRun 0003 arrives 32 minutes after the window closes. Move the stop earlier in the run or onto another run, then re-check.
- Move run 0036 to the own fleet£380.00 / dayA contractor run that drives 72% of its distance empty. Every rule still holds on an own trailer.
- Move run 0038 to the own fleet£80.00 / dayEvery rule still holds on an own trailer.
- Ask why five own trailers stood idleTo reviewContractor pallets cost twice as much as own-fleet pallets. The optimiser could move two runs within the plan's rules; shift or trailer availability the plan doesn't show may explain the rest.
- Look at the 15 part-empty runsTo review£4,756 of cost on runs under half full, mostly multi-temp. Combining loads may need temperature or window changes the plan doesn't allow.
What this sample is built on
- DataA synthetic depot and plan from Trangent's synthetic data generator (size medium, seed 3). One day, not a week.
- CostsA synthetic cost model: £1.10 per km, £24 per hour, a daily cost of £80 (ambient) or £110 (multi-temp) per trailer, contractor runs at £300 each. A real report uses your costs, or labelled UK estimates.
- DistancesStraight-line distance × 1.3 at 60 km/h. A real report uses road distances.
- FillBy pallet space. Weight fill needs line weights, which this plan doesn't have.
- Not availableFuel per km (no consumption rates) and drivers' hours (no shift IDs).
Same plan, same data, same answer: running the check again on these inputs gives exactly these figures.
Want this for your depot?
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