Resources
What is an abnormal load?
An abnormal load is typically an indivisible load that exceeds standard weight, width, length, or height limits and therefore requires notification to authorities before moving.
Quick takeaway
Thresholds and rules are defined in national guidance and the STGO 2003 regulations. Always confirm the latest limits before planning a move.
Definition and triggers
Abnormal loads are usually indivisible loads that exceed normal Construction and Use limits. Common triggers include weight, width, length, and height. These thresholds are set by UK legislation and related guidance, and can vary by vehicle and axle configuration.
- Loads wider than standard limits on the public highway.
- Loads exceeding typical gross weight or axle limits.
- Loads that exceed common length or height limits.
- Indivisible loads that cannot be dismantled for transport.
Typical examples
Real-world loads that often fall into abnormal load categories.
Wind turbine components
Long blades and heavy nacelles require route planning and clearance checks.
Power transformers
High weights that demand bridge and axle-load validation.
Modular structures
Large prefabricated units that exceed standard dimensions.
Why notification matters
Notifications help authorities assess risks, protect infrastructure, and plan for traffic impacts. Clear submissions reduce delays and ensure consistent, defensible decisions.
Official references
Use national sources for definitions, thresholds, and notification requirements.