GlossaryEN1 min readUpdated: Jun 24, 2026
Extra Legal Load Transportation
Carriers and freight forwarders arrange extra legal load transportation when a shipment's weight or dimensions exceed statutory road limits – most commonly for wind turbine components, transformers, heavy industrial machinery, or prefabricated bridge sections.
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Source: https://ops.fhwa.dot.gov/freight/policy/oversize_overweight/index.htm
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Carriers and freight forwarders arrange extra legal load transportation when a shipment's weight or dimensions exceed statutory road limits – most commonly for wind turbine components, transformers, heavy industrial machinery, or prefabricated bridge sections. A special permit from the competent traffic authority is mandatory before departure; depending on the jurisdiction and route complexity, approval can take several days to several weeks. Route surveys are a prerequisite, assessing bridge load ratings, tunnel clearances, and carriageway widths. Suitable vehicles include low-loaders, multi-axle heavy-haul trailers, and modular self-propelled transport units. Escort vehicles, speed restrictions, and temporary road closures are standard permit conditions. Cargo insurance must be explicitly extended to cover the additional liabilities inherent in oversized and overweight haulage. This category is distinct from dangerous goods transport, which is governed by separate frameworks such as ADR or IMDG.
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