Vehicle Classification
Heavy Vehicle Classification
Separating freight movements for planning purposes.
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
Heavy-vehicle classification separates larger or freight-related road users using a project-defined rule, such as body type or a specified axle-based treatment.
Why it matters
Heavy-vehicle volumes can inform freight planning, road design, traffic impact work, pavement inputs and intersection analysis when the class scheme matches the decision.
Common visible categories
Projects may distinguish rigid or single-unit trucks, articulated or semi trucks, tractor-trailers, tankers, dump trucks, delivery trucks or construction vehicles. These labels are not interchangeable without a written definition.
Video limitations
Angle, overlap, trailer visibility, darkness and distance can hide the cues needed for a confident class. Record uncertainty rather than inferring axle count.
Frequently asked questions
Are HGV, heavy vehicle and truck identical terms?
Not necessarily. Their meaning depends on the project or jurisdictional vocabulary, so define the terms in the data dictionary.
Can heavy vehicles be counted at intersections?
Yes, if the movement and class rules are visible and included in the matrix.
Go deeper
Vehicle Classification Methodology
How a project-specific vehicle class scheme is defined and applied consistently.
View Methodology →Related services