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56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 12:59 PM
3,026 datasets, 56,681 catalogued fields, 9,808 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.
n5c8-x7x2
← What we have understood · Dataset page
Most read — At least three quarters of their fields carry a verdict.
Covered and uncovered alike, in the order the publisher lists them. A field with no verdict is one nobody has looked at yet.
| Field | Type | What we know | Meaning | How it was decided | Shared term |
|---|---|---|---|---|---|
| wt1 | Number | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc12 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| yearmonth | Number | Checked, no match | — | dictionary_readThe year and month of the data in YYYYMM format | — |
| month | Number | Understood | time.period.month Month | operator_cohort matched by name, unread | month |
| lane | Number | Checked, no match | — | dictionary_readThe lane which the vehicle is traveling on. Either each lane is considered a separate station or all lanes in each direction are combined. | — |
| wt12 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc2 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt3 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| wt13 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc1 | Number | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wheelbase | Number | Checked, no match | — | dictionary_readThe distance between the steering and the first device axle of a tractor or a heavy single unit. | — |
| wt2 | Number | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc11 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt11 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| hour | Number | Checked, no match | — | dictionary_readOne or two digit code | — |
| spc10 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt4 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc3 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt10 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| class | Number | Nobody has looked | — | — | — |
| direction | Text | Checked, no match | — | dictionary_readThe direction the vehicle is traveling toward on the highway. | — |
| wt8 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| wt16 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc16 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt5 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc4 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt17 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| dirtravel | Text | Nobody has looked | — | — | — |
| gvw | Number | Checked, no match | — | dictionary_readThe gross vehicle weight (GVW) to the nearest pound without a decimal point. This should equal the sum of all the axle weights except for rounding. | — |
| num_axles | Number | Checked, no match | — | dictionary_readThe total number of axles in use by the vehicle including any trailers. | — |
| spc7 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt7 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| second | Number | Checked, no match | — | dictionary_readOne or two digit code | — |
| spc6 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| minute | Number | Checked, no match | — | dictionary_readOne or two digit code | — |
| spc5 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt9 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| wt6 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| speed | Number | Checked, no match | — | dictionary_readThe traveling speed of the truck in miles per hour. | — |
| spc9 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| spc13 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| year | Number | Understood | time.period.year Calendar year | dictionary_read_underspecifiedTwo digit code for the year in which the data were collected. | — |
| wt14 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc14 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| wt15 | Text | Checked, no match | — | dictionary_readWeight of axel to the nearest pound without a decimal point. | — |
| spc8 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| spc15 | Text | Checked, no match | — | dictionary_readThe spacing between the axles to the nearest tenth of a meter (100 millimeters) without a decimal point. | — |
| day | Number | Checked, no match | — | dictionary_readOne or two digit code | — |