CLOCS Accreditation

What is CLOCS?

CLOCS, Construction Logistics and Community Safety, is an industry standard developed to improve the safety of vehicles working on or supplying construction projects. Its purpose is straightforward. Reduce the risk to vulnerable road users, improve operating standards and give clients confidence that transport is being managed properly.

Many major housebuilders, infrastructure projects, local authorities and principal contractors specify CLOCS as part of their site requirements. It is particularly common on larger projects where there are frequent vehicle movements, busy urban roads and strict health and safety expectations. A transport company that cannot demonstrate compliance may find it difficult to secure work or gain access to site.

CLOCS is not simply about fitting extra equipment to a lorry. It sets expectations for vehicle standards, driver competence, incident management and the way operators work with construction sites. The aim is consistent, safe delivery operations that protect drivers, pedestrians and cyclists while supporting efficient project logistics.

CLOCS accreditation

When operators talk about CLOCS accreditation they are normally referring to demonstrating that their vehicles, drivers and transport management meet the standard expected by construction clients. That means having evidence that compliance is maintained, not just claimed.

• Vehicles fitted with the required safety equipment, such as camera systems, warning signage, audible alerts and suitable indirect vision measures where specified.
• Drivers completing recognised vulnerable road user and construction related training appropriate to the contracts they undertake.
• Clear procedures for reporting, investigating and learning from collisions and near misses.
• Routine vehicle inspections and maintenance supported by accurate records.
• Drivers understanding site rules, delivery booking procedures, route restrictions and site specific induction requirements.
• Regular monitoring by transport management to confirm standards are being maintained across the fleet.

Construction clients increasingly expect documented evidence during pre qualification, audits or contract reviews. Good operators keep records organised so they can demonstrate compliance quickly instead of trying to assemble paperwork after a request arrives.

CLOCS versus FORS

CLOCS and FORS are closely connected but they are not the same thing. CLOCS sets out the construction logistics safety standard expected on many building projects. FORS, the Fleet Operator Recognition Scheme, is an operator accreditation covering legal compliance, safety, efficiency and environmental performance across a wider range of transport operations.

Many construction clients accept particular FORS accreditation levels as evidence that an operator meets relevant CLOCS requirements. Even so, operators should never assume FORS automatically satisfies every contract. Individual projects can apply additional vehicle specifications, driver training or reporting requirements. The safest approach is to check the contract conditions before committing vehicles to site.

What does CLOCS cost an operator?

There is no single figure because costs depend on the size of the fleet, the age of the vehicles and how much is already in place. Operators starting from scratch will usually spend money in several areas.

• Vehicle safety equipment upgrades. This can range from a few hundred pounds for minor additions to several thousand pounds per vehicle where multiple systems are required.
• Driver training and refresher courses, together with wages for time away from productive work.
• Administrative time to maintain records, monitor incidents, update policies and respond to client audits.
• Transport management time for compliance checks, contractor reviews and ongoing monitoring.

Most established construction hauliers treat these as normal operating costs rather than one off expenses. Good planning avoids repeated retrofitting and last minute training before a contract starts.

How an external transport manager supports a construction haulier

Holding the standard week after week is where many operators need support. A construction fleet works to changing sites, different client rules and tight delivery schedules. Compliance can slip if it is not checked consistently.

An experienced external transport manager keeps the transport operation focused on the practical details that clients expect to see. That includes monitoring driver records, checking vehicle compliance, reviewing collision reports, confirming training remains current and making sure procedures are followed in daily operation, not only during an audit.

For smaller operators in particular, that independent oversight can prevent minor issues becoming contract problems. It also gives directors a clear view of where improvements are needed before a client inspection or tender submission. The result is a transport operation that continues to meet construction sector expectations throughout the life of the contract, not just at the point work is won.

CLOCS, Construction Logistics and Community Safety, was developed to reduce the risk posed by construction vehicles in busy urban environments, particularly to cyclists, motorcyclists and pedestrians. It is not a legal requirement under operator licensing, but many principal contractors, developers and public-sector clients have made it a condition of site access. If you want to work on those sites, you need to demonstrate CLOCS compliance. It is as simple as that.

What catches operators out is the scope. CLOCS is not just about fitting cameras and close-proximity warning systems to vehicles, though those are part of it. Auditors and procurement teams look at how the whole transport operation is managed, including driver competence, route risk, incident management, subcontractor controls and the quality of supporting evidence. A well-fitted vehicle with a poorly-managed driver file and incomplete maintenance records will not pass scrutiny.

CLOCS readiness in practice

The CLOCS Standard sets out requirements across vehicles, people and organisations. For most operators seeking access to major construction sites, the challenge is less understanding what the standard requires and more building evidence that the systems already in place actually work as described.

Policies exist in most businesses. The real question is whether those policies are applied, monitored and understood by the people doing the work. Auditors are experienced at spotting the gap between a written procedure and what happens on the road. Driver training records that show attendance but not comprehension, vehicle check sheets signed but not completed, incident reports filed but never investigated, these are the things that fail audits.

Where operators are already working towards FORS Silver or FORS Gold, there is considerable overlap with CLOCS requirements. The official CLOCS Standard is available through the programme website: CLOCS – Construction Logistics and Community Safety.

What a CLOCS readiness review typically covers

• Driver induction records, training matrices and vulnerable road user awareness training.
• Vehicle safety equipment, including cameras, proximity warning systems, audible warning devices and safety signage.
• Daily defect reporting processes and the maintenance records that support them.
• PMI inspection schedules, brake testing arrangements and overall fleet compliance controls.
• Route risk assessment and delivery management procedures.
• Collision reporting, investigation and corrective action processes.
• Subcontractor and supply chain compliance checks.
• Whether current FORS accreditation position affects the CLOCS evidence available.
• Evidence documentation required for tender submissions, audits or client approval.

The output is a practical action plan rather than a theoretical report. That might mean strengthening driver briefings, updating route risk assessments, improving the maintenance evidence trail or preparing a structured evidence pack for a particular contract requirement.

When to look for support

CLOCS support is most commonly requested before tendering for a new construction contract, before joining a principal contractor’s approved supplier list, when progressing from FORS Bronze to Silver or Gold, or when an existing contract is being renewed with updated requirements. It is also useful when an operator has solid operational systems but is unsure how to present those systems in the format a client’s procurement team expects.

Leaving CLOCS preparation until the week before a tender deadline rarely works well. The evidence requirements need time to build, and gaps in maintenance records or training matrices cannot be retrospectively fixed.

Making an enquiry

When you get in touch, include your fleet size and vehicle types, operating area, current FORS status, the contract or site requirements you are working towards, and any relevant deadlines. If a client has issued specific wording or documentation, include it. Useful supporting information includes driver training records, vehicle specifications, maintenance arrangements, risk assessments and any existing transport compliance documentation you already hold.

Frequently Asked Questions

Is CLOCS mandatory?

CLOCS is not a legal requirement for every transport operator. However, many construction clients, principal contractors and public sector projects make it a contractual requirement. If your customer specifies CLOCS compliance, you will usually need to meet those standards before vehicles are allowed onto site.

How do I become CLOCS compliant?

Start by reviewing your vehicles, driver training, transport policies and incident procedures against the client’s requirements. Upgrade safety equipment where needed, complete the required driver training, keep accurate records and monitor compliance regularly. Evidence is just as important as the work itself.

What is the difference between CLOCS and FORS?

CLOCS is a construction logistics safety standard aimed at reducing risk around construction vehicle movements. FORS is a wider fleet accreditation scheme covering compliance, safety and operational performance. Many clients recognise FORS, but contract requirements should always be checked because they are not identical.

Do tipper operators need CLOCS?

Many tipper operators working in aggregates, muck away and construction supply chains are expected to meet CLOCS requirements because they regularly attend construction sites. If your work includes major contractors or urban projects, meeting CLOCS standards can be necessary to secure and retain contracts.