Many security companies operate patrol vehicles, response vehicles, or fleet cars used by supervisors and management. If your company is among them, daily vehicle defect checks are not optional — they are a legal requirement under UK road transport legislation, and failing to carry them out correctly exposes both the company and the driver to prosecution.
This guide explains your legal obligations, what a compliant daily check looks like, and how to ensure checks are completed and recorded consistently across your fleet.
The Legal Basis for Daily Vehicle Checks
Under the Road Traffic Act 1988, it is an offence to use, cause, or permit a vehicle to be used on a public road in a dangerous condition. The responsibility falls on both the driver and the employer. A company that fails to implement and enforce a daily check process can be prosecuted alongside the driver if a defective vehicle is involved in an incident.
For companies operating vehicles with a gross vehicle weight over 3.5 tonnes (including some larger patrol and response vehicles), the requirements under the Goods Vehicle (Licensing of Operators) Act and associated DVSA guidance are even more explicit. But the duty of care principle applies across all commercial vehicle fleets, regardless of weight category.
DVSA (Driver and Vehicle Standards Agency) guidance specifically recommends daily walkaround checks as part of a vehicle safety management system. This recommendation carries practical weight: if a vehicle is involved in a collision and no check records exist, the absence of records will be used as evidence of systemic failure in any subsequent investigation or prosecution.
Who Is Responsible for Daily Checks?
The driver of the vehicle carries primary responsibility for ensuring the vehicle is roadworthy before use. However, the operator — your security company — is responsible for:
- Establishing and communicating a vehicle check procedure
- Providing drivers with a defect reporting mechanism
- Acting on reported defects promptly and keeping the vehicle off the road until defects affecting safety are repaired
- Retaining records of checks and actions taken
If a driver reports a defect and the company fails to act on it, the company’s liability in the event of a subsequent incident is substantially increased. Receiving and ignoring a defect report is worse, legally, than having no process at all.
What a Daily Vehicle Check Should Cover
A walkaround check should be completed before the vehicle is driven at the start of each shift or working day. It should cover:
Tyres
- Condition — no cuts, bulges, or embedded objects
- Tread depth — minimum 1.6mm across the central three-quarters of the tyre width
- Inflation — visually correct, no visible deflation
Lights and Indicators
- Headlights (main beam and dipped), rear lights, brake lights, reversing lights
- Indicators front and rear
- Hazard warning lights
- Number plate illumination
Brakes
- Handbrake — sufficient tension, holds on a gradient
- Footbrake — firm pedal with no sponginess or excessive travel
Fluid Levels
- Engine oil
- Coolant
- Screen wash
- Brake fluid (visual check of reservoir level)
Windscreen and Mirrors
- Windscreen — no cracks or chips in the driver’s line of sight
- All mirrors clean, correctly adjusted, and undamaged
- Screen wash operational
- Windscreen wipers in serviceable condition
General Condition
- No bodywork damage that creates sharp edges or affects structural integrity
- Doors open, close, and lock correctly
- Horn operational
- No unusual warning lights on the dashboard
Recording Vehicle Defects
A check that is not recorded is a check that, in legal terms, did not happen. Every daily check must generate a record that can be produced in the event of an inspection, an insurance claim, or a prosecution.
Records must capture:
- Vehicle registration number
- Date of check
- Driver name
- Check result — no defects, or defects found with description
- Driver signature confirming the check was completed
Where defects are reported, the record must also show:
- The action taken (vehicle removed from service, defect repaired, repair booked)
- Date the defect was repaired or the vehicle cleared for return to service
- Confirmation by the responsible person that the defect has been addressed
Paper defect books have historically been the standard approach for smaller fleets, but they create several practical problems: books can be lost, checks can be backdated, and management cannot review check status across the fleet in real time without physically collecting the books.
Digital Vehicle Defect Reporting
Digital reporting via a mobile app or fleet management platform addresses the shortcomings of paper records. Checks are timestamped at the moment of completion, GPS location data can confirm the driver was at the vehicle when the check was made, and defect reports are immediately visible to fleet management rather than sitting in a paper book in the cab.
TacDesk includes a vehicle defect reporting module that allows guards and drivers to submit daily checks via mobile, with defect reports instantly flagged to the management team. The resulting record is tamper-evident, centrally stored, and immediately available for inspection — whether by an ACS auditor, an insurer, or a DVSA enforcement officer.
What Happens When a Defect Is Found
Not all defects are equal. Defects should be classified by severity:
- Safety-critical defects (e.g. brake failure, tyre blowout, headlight failure) — vehicle must be taken off the road immediately. Do not allow it to be driven, even to a garage, unless a qualified assessment confirms it is safe to do so.
- Advisory defects (e.g. washer fluid low, minor bodywork damage) — record the defect and book repair, but the vehicle may continue in use until the repair is completed
All defects, regardless of severity, must be reported through your formal defect reporting process and retained on file. “It was only a small thing” is not a defence that survives scrutiny.
Vehicle Checks and Insurance
Most commercial vehicle insurance policies include a requirement that the operator maintains the vehicle in a roadworthy condition and can demonstrate that reasonable steps were taken to identify defects. A claim arising from an incident involving a vehicle defect that should have been caught by a daily check — and was not, or was not documented — gives your insurer grounds to dispute or reduce the claim.
Conversely, a complete set of vehicle check records demonstrating that the defect was not present at the last check, and that checks are completed consistently, is the strongest possible evidence that your maintenance procedures are adequate.
Summary
Daily vehicle defect checks are a legal requirement for any company operating commercial vehicles in the UK. The process takes less than five minutes per vehicle — the documentation takes less than one. What companies cannot afford is the cost of not doing it: an unroadworthy vehicle on a public road, a prosecution under the Road Traffic Act, or an insurance claim that cannot be defended because no records exist. Building a consistent, documented check process is one of the simplest risk management steps available to any security company with a fleet.