Case Study: Scaffolding Contractor Secures TfL Contracts with CLOCS-Compliant Speed Management
Case Study: Scaffolding Contractor Secures TfL Contracts with CLOCS-Compliant Speed Management
Illustrative case study representing typical results achievable by scaffolding and construction supply operators using AutoKontrol speed limiter technology.
Overview
| Detail | Information |
|---|---|
| Sector | Scaffolding and construction supplies |
| Fleet size | 70 HGVs |
| Vehicle types | Flatbed rigids (18t and 26t), HIAB crane trucks, articulated flatbeds |
| Operating area | London, South East, and M25 corridor |
| Deployment period | 6 months |
| Key result | CLOCS compliance achieved; £3.8M in TfL-connected contracts won |
| Speed incident reduction | 45% |
| Annual saving | £78,000 |
| ROI achieved | Immediate (contract access value) |
A scaffolding and construction supplies contractor operating 70 HGVs from depots in Dagenham and Croydon was watching its most profitable market segment close before its eyes. Transport for London’s increasingly rigorous CLOCS requirements were being embedded into the supply chain requirements of every major construction project in the capital, and the contractor’s fleet — which had no active speed management system — was failing to meet the standard.
Three tender submissions in the preceding six months had been rejected at the pre-qualification stage specifically because the contractor could not demonstrate CLOCS-compliant speed management. The combined value of those three tenders was £2.1M. The contractor’s Commercial Director calculated that without CLOCS compliance, the business would lose access to approximately 40% of its addressable market within 12 months.
AutoKontrol deployed System 80 with TrackSpeed across all 70 HGVs over six months. Within four months of achieving CLOCS compliance, the contractor had won £3.8M in new contracts that had previously been inaccessible.
The Challenge
CLOCS: The London Market Gatekeeper
CLOCS was developed in response to the disproportionate involvement of construction vehicles in fatal collisions involving vulnerable road users in London. For scaffolding contractors, CLOCS compliance is not optional — it is a prerequisite for working on any major construction project within the TfL zone of influence.
The standard requires demonstrable evidence across multiple safety areas, including:
- Active speed management — technology-based enforcement, not just a policy document
- Driver monitoring — real-time visibility of driver behaviour with evidence of management response to exceptions
- Route planning — evidence that vehicles are routed to minimise exposure to vulnerable road users
- Compliance reporting — ongoing data demonstrating sustained adherence to speed limits
The contractor had FORS Bronze accreditation but had never progressed to Silver or Gold. FORS Silver is a stepping stone to CLOCS compliance, and without active speed management technology, neither Silver nor CLOCS was achievable.
Scaffolding Vehicles: A Specific Risk Profile
Scaffolding delivery vehicles carry a risk profile that CLOCS assessors treat with particular scrutiny. The vehicles are:
- Heavy and long — flatbed rigids carrying scaffold tubes, boards, and fittings are among the longest and heaviest vehicles routinely operating in urban London streets
- Frequent urban exposure — scaffolding is delivered to construction sites in city centres, residential areas, and high streets, requiring transit through the highest-risk environments for vulnerable road users
- HIAB-equipped — many vehicles carry mounted cranes for off-loading, adding height, weight, and complexity to the vehicle’s urban manoeuvring characteristics
- Time-pressured — site access windows for scaffold deliveries are often narrow (early morning before site works begin), creating schedule pressure that incentivises speeding on the approach
The contractor’s fleet averaged 14 urban transits per vehicle per day, through some of the busiest streets in London.
The £2.1M Wake-Up Call
The three rejected tenders represented a clear commercial signal. In each case, the pre-qualification questionnaire asked specifically about speed management technology. The contractor’s response — referencing driver training, a speed policy, and telematics monitoring — was assessed as insufficient by the principal contractor’s CLOCS auditors.
Feedback from one principal contractor was direct: “Your fleet safety capability does not currently meet the CLOCS standard we require for our supply chain. We would welcome a resubmission when active speed management technology has been deployed and evidenced.”
The Solution
System 80 + TrackSpeed: CLOCS-Ready Deployment
AutoKontrol designed the deployment specifically to satisfy CLOCS evidential requirements.
System 80 Drive-By-Wire limiters were installed on all 70 HGVs, calibrated to the legal limit for each vehicle category. The tamper-resistant design was essential — CLOCS auditors expect evidence that speed management cannot be overridden by drivers.
TrackSpeed provided the GPS monitoring and reporting layer that CLOCS requires. Speed compliance data, exception reporting, and management response records were all configured to produce the specific evidence that CLOCS auditors look for during assessment.
GeoKontrol for London’s 20 mph Zones
London’s expanding network of 20 mph zones presented a particular challenge. The contractor’s vehicles transited an estimated 52 distinct 20 mph zones on regular delivery routes. GeoKontrol was configured to enforce 20 mph automatically when any vehicle entered these zones.
Additionally, GeoKontrol was configured with reduced-speed approach profiles for:
- 15 schools along regular delivery routes (time-based 20 mph during school hours)
- 8 hospital zones where scaffold deliveries were made to construction sites adjacent to or within NHS premises
- Construction site entry points — 10 mph limits applied at site gates, matching site traffic management plans
CLOCS Evidence Portfolio
AutoKontrol worked with the contractor’s compliance team to build a CLOCS evidence portfolio that could be submitted with tender pre-qualification questionnaires. The portfolio included:
- System specification and type approval documentation
- Six months of fleet-wide speed compliance data
- Exception reporting evidence with documented management responses
- GeoKontrol zone configuration maps showing 20 mph and school zone coverage
- Driver training records linked to the speed management programme
- Monthly compliance trend analysis demonstrating sustained improvement
This portfolio was designed to be modular — sections could be extracted and submitted with different tender applications without regenerating the evidence each time.
Results
Safety and Compliance (12 Months Post Full Deployment)
| Metric | Before | After | Change |
|---|---|---|---|
| Speed-related incidents | 18 | 10 | -45% |
| 20 mph zone compliance rate | Not monitored | 96.1% | Baseline established |
| DVSA speed limiter defects | 4 | 0 | -100% |
| Near-misses involving VRUs | 3 | 0 | -100% |
| FORS accreditation level | Bronze | Gold | Two-level upgrade |
| CLOCS compliance | Not achieved | Fully compliant | Achieved |
Commercial Impact
| Outcome | Value |
|---|---|
| Contracts won post-CLOCS compliance (12 months) | £3,800,000 |
| Previously rejected tenders resubmitted and won | 2 of 3 (£1,400,000) |
| New tenders accessible (pipeline value) | £5,200,000 |
| Estimated annual revenue increase attributable to CLOCS | £1,900,000 |
Financial Summary
| Item | Annual Amount |
|---|---|
| Fuel savings (70 HGVs) | £42,000 |
| Insurance premium reduction | £18,000 |
| Avoided incident costs (8 fewer incidents) | £14,000 |
| DVSA compliance savings | £4,000 |
| Total direct annual benefit | £78,000 |
| Hardware + installation (70 HGVs) | £68,600 |
| Annual TrackSpeed + GeoKontrol subscription | £21,000 |
| FORS Gold assessment costs | £4,800 |
| Year one total cost | £94,400 |
| Payback period (direct savings) | 8 months |
The direct savings payback was eight months, but the commercial reality was that the investment paid for itself the moment the first CLOCS-compliant tender was won. The £3.8M in new contract revenue generated margins that exceeded the total programme cost within weeks of contract commencement.
What the Fleet Manager Said
“We were losing tenders to competitors who had speed management technology and we didn’t. It was that simple. The CLOCS evidence portfolio that AutoKontrol helped us build has been submitted with every tender since deployment. We’ve gone from being rejected at pre-qualification to being complimented on our fleet safety documentation. The commercial impact has been transformational.”
Commercial Director, scaffolding and construction supplies contractor
Key Takeaways
- CLOCS compliance is a market access requirement for construction supply chain operators in London — without it, tenders are rejected at pre-qualification
- System 80 with TrackSpeed provides the active enforcement and evidential reporting that CLOCS auditors specifically look for
- GeoKontrol’s 20 mph zone enforcement is particularly relevant in London, where the 20 mph network is extensive and expanding
- A pre-built CLOCS evidence portfolio accelerates the tender submission process and improves pre-qualification success rates
- The commercial return on CLOCS compliance typically dwarfs the direct safety and fuel savings — contract access is the primary business case
- FORS Gold accreditation (achievable alongside CLOCS with the same technology platform) provides additional competitive differentiation
Could Your Fleet Achieve Similar Results?
AutoKontrol works with scaffolding contractors, construction supply operators, and specialist hauliers across the UK. Our System 80, TrackSpeed, and GeoKontrol solutions are specifically configured to meet CLOCS and FORS requirements, and our compliance team can support you through the accreditation process.
If your business is losing access to London or TfL-connected contracts because of CLOCS requirements, our team can assess your fleet and provide a deployment plan with a clear timeline to compliance.
Learn more about speed limiters and CLOCS compliance, explore speed limiters and FORS accreditation, or calculate your return with our speed limiter ROI guide.
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