Transport compliance comes with a language of its own. From OCRS and PMI to DBAQ and the Working Time Directive, the acronyms stack up quickly — and misunderstanding them can put your Operator Licence at risk. This glossary brings together the key terms every HGV and PSV operator and transport manager should know, grouped alphabetically for easy reference.
How to use this glossary
- Terms are grouped alphabetically by first letter
- Definitions reflect UK road transport law and DVSA practice
- Need help applying any of these in your operation? Talk to our consultants
A
- Abnormal Load Permits
- Permits required for the transportation of oversized or overweight loads on UK roads.
- ADR
- The European Agreement concerning the International Carriage of Dangerous Goods by Road. See our guidance on the role of a DGSA.
- AETR
- The Agreement on the European Regulations Governing the Work of Drivers Engaged in International Road Transport.
C
- COC (Certificate of Conformity)
- A document certifying that a vehicle complies with EU regulations.
- Commercial Vehicle Roadworthiness Testing
- The testing of commercial vehicles to ensure roadworthiness and compliance with legal requirements.
- Community Licence
- A licence allowing a commercial vehicle operator to transport goods or passengers within the European Union.
- Compliance
- Adhering to legal requirements and regulations as set out by the DVSA.
- CPT Compliance Manual
- A manual published by the Confederation of Passenger Transport to help passenger transport operators comply with legal requirements.
- Continuous Professional Development (CPD)
- The ongoing process of developing knowledge and skills in a professional field — required for transport managers and some drivers.
- CPC (Certificate of Professional Competence)
- Mandatory professional training for drivers of HGVs or PCVs in the UK and EU, covering driver safety, legal requirements, vehicle maintenance and customer service. New drivers must obtain it and existing drivers undertake periodic training to maintain it. See our Driver CPC courses.
- CPC Transport Management (TMCPC)
- The CPC qualification for transport managers — essential for those seeking a career managing road haulage or passenger vehicle operations. See our TM CPC training.
- Cross-Border Transport
- The movement of goods or passengers across international borders, including compliance with customs and import/export rules.
- CMR
- The Convention on the Contract for the International Carriage of Goods by Road.
D
- Dangerous Goods Safety Adviser (DGSA)
- A person responsible for advising on the safe transport of dangerous goods by road and ensuring compliance. Learn about the DGSA role.
- DDI (Driver Defect Inspection)
- Commonly known as driver walkaround checks; together with DDR (Driver Defect Reporting), these help transport managers identify and address safety issues before they become serious.
- Department for Transport (DfT)
- The UK government department responsible for transport policy and regulations.
- Desk Based Assessment Questionnaire (DBAQ)
- A compliance self-assessment form sent to operators to complete and return to the DVSA within a given timescale. We provide DBAQ support.
- Digital Operators Licence (DOL)
- A digital version of the O-Licence allowing operators to manage and share licence information online.
- Digital Tachograph
- An electronic device recording a driver's activities, including driving time and rest breaks. See our tachograph services.
- Driver CPC
- A qualification required for commercial drivers, demonstrating their knowledge and skills.
- Driver Conduct Hearings
- Hearings held by the Traffic Commissioner to adjudicate on allegations of driver misconduct.
- Driver CPC Exemption
- Exemptions to the Driver CPC requirements for certain types of commercial driver.
- Driver CPC Periodic Training
- Regular training drivers must complete to maintain their Driver CPC.
- Driver Qualification Card (DQC)
- A card showing a driver has completed the required Driver CPC training.
- Driver Vehicle Inspection Report (DVIR)
- A report completed by a driver to identify defects or issues with their vehicle.
- Driver's Hours
- The maximum time a commercial driver may legally drive and work within a set period. See drivers' hours explained.
- DVSA
- The Driver and Vehicle Standards Agency.
- DVSA Enforcement
- The enforcement of driver and vehicle standards and regulations by the DVSA.
- DVSA Earned Recognition
- A voluntary accreditation scheme letting operators demonstrate compliance with road safety standards in return for reduced regulatory inspections and improved compliance ratings.
E
- Enforcement
- Ensuring compliance with legal requirements and regulations.
- AETR (European Agreement on Crews)
- An international agreement regulating the working conditions of drivers engaged in international transport.
- External Transport Managers
- Professionals who provide transport management services to operators on a freelance or consultancy basis — a cost-effective solution for SMEs or for larger operators needing extra support. Explore our External Transport Manager service.
F
- Fleet Management
- The management of a commercial vehicle fleet to ensure compliance, safety and efficiency.
- Fleet Operator Recognition Scheme (FORS)
- A voluntary accreditation demonstrating compliance with a range of safety, environmental and operational standards. See our FORS guidance.
- Freight Transport Association (FTA)
- An organisation representing the logistics and supply chain industry in the UK, publishing accident and compliance guides for operators.
G
- Goods Vehicle Operating Centre (GVOC)
- The physical location from which a commercial vehicle operator manages their fleet.
- Goods Vehicle Operator Licensing (GVOL)
- The process of obtaining and maintaining an O-Licence for operating commercial goods vehicles.
H
- Hazmat
- Hazardous materials — substances that pose a threat to human health, property or the environment due to their chemical, physical or biological properties.
- HGV
- Heavy Goods Vehicle — a truck or lorry over 3.5 tonnes Gross Combination Mass (GCM).
- HGV Levy
- A charge levied by the UK government on heavy goods vehicles that use UK roads.
L
- LGV
- Light Goods Vehicle or Large Goods Vehicle.
- Laden Brake Test
- A roller brake test carried out while the vehicle carries the desired weight — the opposite of an unladen brake test. See understanding your roller brake test.
N
- National Road Haulage Association (NRHA)
- A trade association representing road haulage operators in the UK.
O
- O-Licence
- Operator's Licence. Learn about the Operator Licence and how to apply step by step.
- O-Licence Suspension or Revocation
- The suspension or revocation of an O-Licence by the Traffic Commissioner for non-compliance.
- Operator Compliance
- The process of ensuring an operator complies with all legal requirements and regulations.
- Operator Compliance Audit (OCA)
- An audit or inspection by the DVSA to assess an operator's compliance with legal requirements.
- OCRS (Operator Compliance Risk Score)
- A scoring system used by the DVSA to assess the compliance risk of operators, based on roadworthiness and traffic data. Try our OCRS What-If tool.
- Operator CPC
- The Operator Certificate of Professional Competence.
- Operator Licence Application
- The process of applying for an O-Licence.
- Operator Licence Conditions
- Conditions an operator must adhere to in order to maintain their O-Licence.
- OTC
- Office of the Traffic Commissioner.
P
- Passenger Vehicle Operator Licensing (PVOL)
- The process of obtaining and maintaining an O-Licence for operating passenger vehicles.
- Preventative Maintenance Inspection (PMI)
- A scheduled inspection in which a qualified technician checks a vehicle's brakes, steering, suspension, lights, tyres and engine, alongside a review of its service history. Central to maintaining roadworthiness.
R
- Rest Periods
- The minimum rest breaks and rest periods a driver must take to comply with the law.
- Road Haulage Association (RHA)
- A trade association representing road haulage operators in the UK.
- Road Traffic Act
- UK legislation governing the use of motor vehicles on public roads.
- Road User Levy
- A charge levied on commercial vehicles that use UK roads.
- Roadworthiness
- The state of a vehicle being fit for the road.
S
- Safety Inspections
- Another name for PMIs (Preventative Maintenance Inspections).
- SIPCAT
- The Safety Inspection Period Calculator and Analysis Tool used by DVSA examiners to analyse trends in an operator's maintenance regime. Try our own SIPCAT tool.
T
- Tachograph
- A device recording a vehicle's speed and distance and the driver's activity, such as driving, rest and breaks. See tachograph rules explained.
- Tachograph Analysis
- The analysis of tachograph data to ensure compliance with drivers' hours and working-time rules.
- TIR (Transports Internationaux Routiers)
- A customs transit system for goods transported by road across international borders.
- Traffic Area Network
- The network of regional offices of the Traffic Commissioners responsible for operator licensing and compliance.
- Traffic Commissioner
- A government official responsible for the regulation of commercial vehicle operators in the UK. Read more about the Traffic Commissioner.
- Traffic Commissioner Public Inquiry
- A hearing held by the Traffic Commissioner to adjudicate on issues related to operator licensing and compliance. See what is a Public Inquiry.
- Transport Compliance Audits
- Assessments carried out to ensure an operator complies with all relevant regulations, including operator licence and tachograph requirements. Book a compliance audit.
- Transport Law
- The body of law governing the commercial use of vehicles in the UK.
- Transport Manager
- The person responsible for managing a commercial vehicle fleet and ensuring compliance — overseeing planning, scheduling, maintenance and adherence to safety and environmental standards.
- Transport Manager CPC
- A qualification demonstrating a person's knowledge and competence in transport management.
- Transport Manager Refresher Training
- Training required for transport managers to refresh their knowledge and skills.
U
- UK Driving Licence Categories
- The categories that allow individuals to operate different vehicle types — including Category B (vehicles up to 3.5 tonnes), C and CE (large goods vehicles, with and without trailers over 750kg), and D and DE (passenger vehicles with more than eight seats, with and without trailers).
V
- VOSA Enforcement
- The enforcement of vehicle and operator standards by the former Vehicle and Operator Services Agency, now the DVSA.
- Vehicle Excise Duty (VED)
- A tax paid by vehicle owners to use UK roads.
- Vehicle Maintenance
- The regular upkeep and repair of commercial vehicles to ensure roadworthiness and safety.
- VOSA
- The Vehicle and Operator Services Agency — the predecessor of the DVSA.
- VOR (Vehicle Off Road)
- When a vehicle is taken out of use for repairs or maintenance.
- Vehicle Roadside Inspections
- Inspections conducted by the DVSA to check that commercial vehicles are roadworthy and compliant.
- Vehicle Roadworthiness Test (MOT)
- A mandatory annual test for commercial vehicles to ensure roadworthiness.
W
- Working Time
- The time a driver spends working, including driving and other activities such as loading and unloading.
- WTD (Working Time Directive)
- Legislation designed to ensure individuals do not work excessive hours, protecting their health, safety and wellbeing.
Need help putting these into practice?
Understanding the terms is one thing; applying them across your operation is another. Our CPC-qualified consultants translate compliance jargon into practical systems that protect your Operator Licence. Explore our services, read more in our blog, or contact us for tailored advice.
