Vehicle Classification
Vehicle Classification Systems
How class systems should be designed and documented.
By SWAT Alliance Editorial Team · Updated 25 August 2026
Insight at a glance
A short visual checklist for better study decisions.
Use the article as a starting point, then confirm the project-specific scope, method, review and output with the delivery team.
Question
What decision should this evidence help someone make?
Scope
Which locations, movements, classes and periods matter?
Review
How will completeness and definitions be checked?
Output
What format will make the result easiest to use?
Short answer
A vehicle-classification system is a written set of categories and decision rules used consistently for a specific traffic study.
Choose a useful scheme
The scheme may distinguish two-wheelers, passenger vehicles, commercial vehicles, public transport or heavy vehicles, but only categories relevant to the project should be added.
Make the rule observable
A category should be recognisable from the chosen source. If a body type, axle configuration or use cannot be identified reliably, change the rule or record an exception.
Keep labels stable
Use one data dictionary across sites, analysts, tables and charts, and document any jurisdiction-specific terminology.
Frequently asked questions
Is there one global classification system?
No. Client, authority and analytical conventions differ; the approved project scheme controls.
Can a scheme include bicycles and pedestrians?
Yes, when the study matrix treats them as required road-user categories.
Go deeper
Vehicle Classification Methodology
How a project-specific vehicle class scheme is defined and applied consistently.
View Methodology →Related services