Data Quality

Every vehicle, operator and manufacturer page carries a badge showing how complete that record is. Here is exactly what it counts, and why some fields are deliberately left out.

What the badge means

85%+

Detailed

Thoroughly documented

60%+

Good

Most details present

30%+

Needs work

Some gaps to fill

<30%

Sparse

Little recorded yet

The principle

The score only counts information that essentially every record should have. Fields that apply to some vehicles but not others are left out entirely, so a record is never marked down for something that simply does not apply to it.

Every counted field is worth the same. The score is the number of counted fields filled in, divided by the total number of counted fields. For a vehicle there are 13 counted fields:

filled in

counted fields

85%

Detailed

Vehicles: what counts

Overview

Year built
Fleet number
Depot

Specifications

Deck type
Fuel type
Engine
Transmission
Emission standard

Capacity and access

Seating capacity
Length
Door configuration
Accessibility features

Accessibility is counted. Low floor, wheelchair accessibility and next stop audio matter a great deal to passengers planning a journey, and every vehicle can be described one way or the other, so this is treated as core information.

Vehicles: what does not count, and why

Bus name

Only a small number of operators name their vehicles, so it would be unfair to mark down the majority that do not.

Chassis

Many buses and coaches are of integral construction, with no separate chassis to record.

Battery capacity

Only applies to battery electric vehicles. Most buses on UK roads are not battery powered.

Standing capacity

Coaches, minibuses and some other vehicles do not permit standing passengers at all.

Wheelchair spaces

Requirements have changed over time and older vehicles may have none. Counting it would penalise historic vehicles.

Layout notes

An optional field for describing an unusual interior layout. Most vehicles will never need it.

Features

Wi-Fi, USB charging, air conditioning and similar are added extras rather than core vehicle data.

Notes

Purely informational free text, used only occasionally.

Operators and manufacturers

Operators

Logo Address Phone Website Service area
Parent companies also count the parent company and its logo, because that brand relationship is the point of those pages. Notes not counted

Manufacturers

Logo Website Address Phone Year founded Country Status
Notes not counted An occasional informational field, so requiring it would cap the score on records that are otherwise complete.

Spotted something missing?

Anyone can help improve a record. Vehicle, operator and manufacturer pages all have a suggestion option, and contributions are reviewed before they go live. Filling in a counted field will raise that record's score, but please only add information you know to be correct. Accuracy matters far more to us than a higher percentage.

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