Highway Code & The Law: What You Need to Know About Road Barriers
Installing road barriers without understanding the legal framework can expose you to significant liability. This guide summarises the key legislation, standards, and approvals that govern road barriers in the UK.
The Primary Legislation
Highways Act 1980
- Section 66: Local authorities can place guardrails and safety equipment on footways
- Section 90A-90F: The legal framework for road humps on public highways
- Section 141: Prohibits placing anything on a public highway that could obstruct or endanger road users
Road Traffic Regulation Act 1984
Empowers local authorities to make Traffic Regulation Orders (TROs) restricting vehicle movements. TROs are required before installing many permanent traffic calming measures on public roads.
Traffic Signs Manual: Chapter 8
Chapter 8 is the definitive guide for temporary traffic management on public roads. All equipment used in Chapter 8 compliant schemes must be CE/UKCA marked. See our Chapter 8 compliant traffic cones and barriers.
The Highways (Road Humps) Regulations 1999
| Requirement | Specification |
|---|---|
| Minimum height | 25mm |
| Maximum height | 100mm |
| Minimum length (horizontal) | 900mm |
| Illumination | Retroreflective markings required |
| Advance signage | Road humps warning sign (Diagram 557) |
| Consultation | Emergency services must be consulted |
BS EN 1317: Crash Barriers & Vehicle Restraint Systems
BS EN 1317 is the European standard defining performance requirements for road restraint systems. Products must be tested and classified for Containment Level (N1–H4b), Working Width, and Severity Index. All permanent roadside barriers on UK trunk roads and motorways must comply.
Private Land: What's Different?
On private land, you are not bound by the Highways Act or TRO requirements. However, you remain subject to Health and Safety at Work Act 1974, CDM Regulations 2015, and planning law.
Liability for Incorrect Installation
Installing barriers incorrectly on a public highway can result in prosecution under the Highways Act, civil liability for accidents, removal at your cost by the highway authority, and invalidation of your public liability insurance.
Related guides: highway code and traffic calming | pedestrian crossing equipment | road plates and trench covers