IN Brief:
- The CPS discontinued more than 60 linked cases after a Birmingham test prosecution involving two crane operators and two drivers.
- The dispute concerned whether breaches of police embargo periods removed the cranes' STGO exemptions and exposed them to lower standard weight limits.
- The outcome ends the immediate prosecutions but leaves the wider industry dispute over abnormal-load enforcement unresolved.
More than 60 mobile crane cases have been discontinued after a Birmingham test prosecution ended when the Crown Prosecution Service offered no evidence. Four defendants — two crane operators and two drivers — were formally acquitted, bringing the test case to an end before the disputed legal arguments were determined by the court.
West Midlands Police had alleged that mobile cranes travelled during prohibited periods and were therefore no longer operating lawfully under exemptions provided by the Road Vehicles (Authorisation of Special Types) General Order 2003, commonly known as STGO. Police argued that the standard Construction and Use Regulations 1986 consequently applied, subjecting the cranes to lower permitted weights.
The test case had been expected to last two days at Birmingham Magistrates’ Court. On the first day, however, the CPS offered no evidence, and the court recorded acquittals for the defendants.
The CPS subsequently discontinued more than 60 other pending cases involving mobile crane operators and drivers and based on the same legal issues. The outcome has been welcomed by the Heavy Transport Association, which has been challenging what it considers inconsistent enforcement affecting mobile cranes and abnormal-load movements.
HTA chair Chris Britton described the outcome as “an excellent result for all those involved” and an important one for the wider mobile crane and abnormal-load community. The association has also said it supports targeted enforcement against unsafe or non-compliant operation while opposing what it considers disproportionate action against compliant businesses.
The dispute centres on more than the practical inconvenience of travelling during an embargo period. Mobile cranes operate under a specialist regulatory regime because their dimensions and weights can exceed those permitted for conventional road vehicles, making the continued application of STGO exemptions central to whether a particular movement is lawful.
If an embargo breach were automatically capable of removing that status, the consequences could extend well beyond a traffic-management offence. The vehicle could instead be assessed against ordinary weight limits it was never designed to meet, creating the basis for an overloading prosecution.
The defendants had argued that West Midlands Police and the CPS had not identified a sufficient legal basis for blanket embargo times to produce that result. Because prosecutors offered no evidence, the Birmingham proceedings ended without a substantive judgment resolving the wider interpretation of STGO.
The distinction is important for future enforcement. The acquittals and discontinued cases remove the current prosecutions, but they do not amend STGO, the Construction and Use Regulations, or the powers available to police forces when managing abnormal-load movements.
The case sits within a longer dispute between heavy transport operators and police over regional differences in abnormal-load enforcement. Industry groups have argued that embargo periods, notification procedures, and movement restrictions can be interpreted differently between force areas, leaving national operators to manage different requirements across a single journey.
That variation has direct construction consequences. Mobile cranes can be scheduled around road closures, lifting teams, escorts, possession windows, and other site activities, so an unexpected delay during mobilisation can disrupt far more than the transport leg of the job.
Large infrastructure and city-centre lifts are especially sensitive to timing. A crane may have to arrive within a narrow window because roads are closed, other trades have been cleared from an exclusion zone, or a lifting sequence must be completed before the project returns to normal operation.
National industry bodies have consequently continued discussions with policing organisations over abnormal-load notifications, movement restrictions, and enforcement. Parliament has also heard concerns about inconsistent treatment of heavy transport and mobile crane movements between police-force areas.
The Birmingham result removes a large group of cases without establishing a new legal precedent on the underlying STGO question. Operators must still comply with applicable route, notification, axle-weight, and movement requirements, while police retain their road-safety and network-management responsibilities.
Further guidance or policy alignment will determine whether the discontinued prosecutions produce a lasting change in enforcement practice. Until then, national crane operators remain dependent on how individual police forces apply abnormal-load controls across different parts of the road network.
