VRS non-proprietary safety barrier systems (NPSBS)

The purpose of this standard is to provide the candidate with the knowledge and skills to reconstruct legacy VRS non-proprietary safety barrier systems, in a work gang (VRS – vehicle restraint systems).

CITB has developed this standard in discussion with industry


Minimum 3 days of 6 learning hours per day


The purpose of this standard is to provide the candidate with the knowledge and skills to reconstruct legacy VRS non-proprietary safety barrier systems, in a work gang (VRS – vehicle restraint systems).

The scope of this standard covers: 

  • overview of NPSBS including: tensioned corrugated beams, open box beams, un-tensioned corrugated beams, and double height box beams 
  • safety review
  • hand tools and equipment
  • interpreting information
  • inspection
  • dismantling
  • setting out
  • foundations
  • installation 
  • tensioning
  • torque

Occupational relevance

Training delivered against this standard would be relevant to the following occupational group(s):

  • operative and craft
  • supervision
  • management and leadership.

Candidate pre-requisites

There are no candidate pre-requisites as part of this standard. However, performing the work would require additional basic site skills training including (not exhaustive):

  • safe working on roadways, use of hand and power tools, underground services identification, manual handling, abrasive wheels, use of petrol cut off saws, dust control, water suppressant, personal protective equipment(PPE) use, and respiratory protective equipment (RPE) face fit.


As a minimum, course instructors must be able to demonstrate that, in relation to this standard, they have:

  • a train the trainer or instructional techniques course certificate
  • successfully completed training to this standard
  • at least 2 years relevant industrial experience
  • a verifiable CV.


The following method(s) may be used in the delivery of this standard:

  • classroomand safe simulated work site

All materials and equipment must be of a suitable quality and quantity for candidates to achieve learning outcomes, and must comply with relevant legislation.

The class size and candidate/instructor ratio must allow training to be delivered in a safe manner and enable candidates to achieve the learning outcomes.


For the successful completion of training, candidates must complete an end of course practical assessment that measures the learning outcomes and has a pass or fail criteria

Quality assurance

Quality assurance against this standard will require initial approval of the training organisation and their content mapped to the standard.

CITB will also conduct an approval intervention, either desk-based or centre visit, to ensure the training organisation can meet the requirements of the training standard.

Approved training organisations (ATOs) will be required to present information on records of training and assessment upon request to CITB for desk based analysis. They will also be visited annually by the CITB quality assurance team.


There are no mandatory renewal or recommended refreshment requirements for this standard.

Approval date

November 2018

Review cycle

Either on request or in 3 years from approval date (of the standard).

Learning outcomes

The candidate will be able to: Additional guidance to support learning outcome
Briefly describe NPSBS barrier systems including: tensioned corrugated beam, open box beam, un-tensioned corrugated beam, RHS and double height box beam.   
Review of hazards, risks, controls, and safe work practices while working on low- and high-speed roads, including: PPE, cones, and emergency response. Demonstrate by working safely during all practical activities 
Use hand tools and equipment for: dismantling, installing, marking, measuring, drilling, repairing, tightening, and tensioning.  
Interpret manufacturer’s instructions, layout drawings, and standards Printed examples
Extracts from codes of practice
Inspect NPSBS systems including: safety, detailed, records, compliance with current standards, fault identification, and remedial work identification.  BS 7669-3:1994 contains forms for inspections
Dismantle NPSBS systems including: lifting (methods and plant), handling, storage, maintenance, repair, and waste disposal. BS 7669-3:1994 contains maintenance information
Set out NPSBS systems including: site/barrier preparation, clearances, datums, reference points, transitions, measuring, spacing, beam height, and marking out.  
Install foundations for NPSBS posts that are: driven, concrete set, excavated (set in soil), socket set, angled beam, surface mounted, and demountable including: removal, repair, excavation, boring, anchorages, filter drain, post/socket, passive filler, reinforcement, waterproofing, formwork, and concrete (pour, vibrate, compact).  
Install straight, curved, and surface mounted NPSBS barriers including: final fix, terminal sections/flares, drilling, straps, expansion joints, and regular joints.  
Tension NPSBS systems including: tensioner assemblies, adjuster assemblies, and expansion assemblies.  
Torque NPSBS systems including: using tools, methods, settings, thread engagement, temperatures, and calibration.  


Additional information

National Highway Sector Scheme (NHSS)

Find publications related to certification bodies including

  • 10B for vehicle restraint systems
  • 5B for the supply, installation, maintenance, & repair of bridge parapets
  • 2B for the supply, installation, maintenance and repair of vehicle restraint systems


Design manual for roads and bridges, volume 2 section 2 part 8:

Health & Safety Executive (HSE) 

Health and Safety at Work etc Act 1974 – Legislation explained

Provision and Use of Work Equipment Regulations (PUWER) 1998

PUWER: Safe use of work equipment

PPE: Personal protective equipment at work (3rd edition)

Guide to PPE at Work Regulations 1992

Standards and markings for PPE

LOLER: Safe use of lifting equipment. Lifting operations and lifting equipment regulations 1998. Approved code of practice and guidance

The safe use of vehicles on construction sites

Traffic management 

COSHH: Control of Substances Hazardous to Health


Health and Safety at Work etc Act 1974

Provision and Use of Work Equipment Regulations (PUWER) 1998

Personal protective equipment at Work Regulations (PPE) 1992

Health & Safety (Signs & Signals) Regulations 1996

Lifting Operations and Lifting Equipment Regulations (LOLER) 1998

Control of Substances Hazardous to Health Regulations (COSHH) 2002

British/ISO standards

Tools and equipment:

  • BS EN ISO 6789-1:2017 Assembly tools for screws and nuts. Hand torque tools. Requirements and methods for design conformance testing and quality conformance testing: minimum for conformance 

Vehicle restraint systems

  • BS 7669-3:1994 Guide to the installation, inspection and repair of safety fences

Pedestrian restraint systems

  • BS 7818:1995 Specification for pedestrian restraint systems in metal
  • PD CEN/TR 16949:2016 Road restraint system. Pedestrian restraint system. Pedestrian parapets

Vehicle security barrier systems

  • PAS 0068-2013 Impact test specifications for vehicle security barrier systems
  • PAS 0069-2013 Guidance for the selection, installation and use of vehicle security barrier systems

Guidelines for computational mechanics

  • PD CEN/TR 16303-1,2,3,4: 2012. 18/30371552 DC. Road restraint systems. Guidelines for computational mechanics of crash testing against vehicle restraint system. Vehicle Modelling, Verification, Validation.

Vehicle restraint systems 

  • PD 6634-1:1999 Fundamentals database
  • PD 6634-2:1999 Fundamentals of highway restraint systems
  • PD 6634-3:1999 Development of vehicle highway barriers in the United Kingdom
  • PD 6634-4:1999 Development of bridge parapets in the United Kingdom
  • PD 6634-5:1999 Development of barrier transitions and terminals
  • PD 6634-6:1999 Crashworthy roadside features Impact attenuators

Road restraint systems 

  • BS EN 1317-1:2010 Terminology and general criteria for test methods
  • BS EN 1317-2:2010 Performance classes, impact tests for safety barriers including vehicle parapets
  • BS EN 1317-3:2010 Performance classes, impact tests for crash cushions
  • BS EN 1317-4 DD ENV 1317-4:2002 12/30263211 DC Performance classes, impact test methods
  • BS EN 1317-5:2007+A2:2012 13/30290130 DC Product requirements, test, assessment, acceptance
  • BS EN 1317-7 12/30263214 DC Performance classes, impact tests for terminals of safety barriers
  • BS EN 1317-8:2012 PD CEN/TS Motorcycle road restraint systems which reduce the impact severity

Safety fences and barriers for highways - Specification for components 

  • BS 6579-1:1988 Tensioned corrugated beam safety fence on Z posts
  • BS 6579-3:1988 Tensioned rectangular hollow section beam (100 mm x 100 mm) safety fence
  • BS 6579-4:1990 Tensioned rectangular hollow section beam (200 mm x 100 mm) safety fence
  • BS 6579-5:1986 Open box beam safety fence (single height)
  • BS 6579-6:1988 Open box beam safety fence (double height)
  • BS 6579-7:1989 Untensioned corrugated beam safety fence
  • BS 6579-8:1987 Concrete safety barriers