Bellfield depot · Tuesday 16 September, 17:42
Fourteen vans, eleven of them ready by six
Every van plugs in as it returns and draws until it reaches the charge its route needs. Three will not get there before they are due out.
118 kW
peak draw, 23:10
ceiling 120 kW
Three vans are short at departure
Each one returned too late to take a full charge before its route leaves. Moving a departure back, or moving a van to a faster bay, closes the gap.
- B-0414%returned 02:10, due out 05:30
- C-029%returned 01:45, bay limited to 7 kW
- C-036%returned 02:40, due out 06:00
Rebuilding keeps the ceiling at 120 kW.
Tonight’s plan
Available once every van clears its departure.
- Charging
- Short at departure
- Due out
| Van | Route | In | Needs | Plug-in to charged, and due out | Ready |
|---|---|---|---|---|---|
| A-01 | Bellfield – Carlton | 18:05 | 80% | 23:00 | |
| A-02 | Bellfield – Carlton | 18:20 | 80% | 23:20 | |
| A-03 | Eastgate loop | 19:10 | 65% | 23:30 | |
| A-04 | Eastgate loop | 19:40 | 65% | 00:10 | |
| A-05 | Depot spare | 18:00 | 100% | 00:20 | |
| B-01 | Northmoor – Selby | 20:15 | 90% | 01:45 | |
| B-02 | Northmoor – Selby | 20:50 | 90% | 02:20 | |
| B-03 | Riverside | 21:30 | 70% | 02:00 | |
| B-04 | Riverside | 02:10 | 75% | 14% short | |
| B-05 | Depot spare | 18:40 | 100% | 01:00 | |
| C-01 | Halewood | 22:05 | 60% | 02:00 | |
| C-02 | Halewood | 01:45 | 60% | 9% short | |
| C-03 | Halewood | 02:40 | 60% | 6% short | |
| C-04 | Halewood | 21:55 | 60% | 01:45 |
Design notes
- Shape of the page
- One canvas. A night runs left to right across every row, so a van is a position in time rather than a row in a list. The site’s own draw is plotted on those same fourteen hours, at the same scale.
- What it leads with
- The number the supplier bills on. Peak draw against the contracted ceiling is the one figure that decides whether tonight cost what it should, and it is the largest thing on the screen.
- Spacing
- Separation is space, and where space is not enough it is a single hairline. Nothing on this screen is a card, because cards here would need either a border or a shadow and this system publishes neither.
- The one bold decision
- The three vans that will not make their departure are not marked in red. This system allows one colour besides its neutrals, and it is spent on the action; so a shortfall is a bar that visibly stops short of the mark, a hatched gap where the missing charge would be, and the deficit written out. Form and position carry it, which is also why a grey printout and a screen reader both still carry it.
- Where the colour comes from
- The whole palette is nine values published by the reference — white, two greys of surface, four of text, one divider, and a single blue. Which value does which job is solved rather than chosen: each is the published value closest to its limit that still reads against the worst surface it can land on.
- Measured
- Body text on the alternate surface reads at 10.07:1 and the quietest text
on that same surface at 5.91:1. The white label on the blue action reads at
4.82:1.
Two things the palette cannot do, found by measuring it. Its placeholder grey reads at 2.98:1 on the alternate surface, just under what a control outline owes, so an outline here uses the darker grey the reference reserves for text. And the blue reads at 4.82:1 on white but 4.39:1 on the alternate surface, so a blue word sitting in a grey band would fail there; the blue used for text is a fraction darker than the blue used for the button, which is the smaller of the two available compromises.
- One theme
- Light only, because the reference publishes light only. Its dark value is described as a surface for text over photography rather than as a theme, and the rest of a dark palette is not published anywhere. Inventing the other seven values would be making a design system up and calling it a transcription.
- Where the type comes from
- Four sizes, which is the whole ramp the reference publishes, and two weights. Its own guidance sets a ceiling on how large display type may go, and this page respects it: the largest thing here is the peak figure, at the same size as the headline.