The NRSWA Red Book explained: the statutory code behind safe street works

The NRSWA Red Book is the statutory code of practice that governs how street works and road works in the UK are signed, lit and guarded. Its formal title is Safety at Street Works and Road Works: A Code of Practice, and almost nobody in the industry calls it that, including the body that hosts it. It is the document our crews work to on every road we open.

The code opens by asking two questions of anyone planning works on the highway. Will someone using the road or footway, from any direction, understand exactly what is happening and what is expected of them? And have you made the site safe, both to work in and for the public passing it? Almost everything in the Red Book follows from those two questions.

This guide explains what the Red Book actually is, who issues it and why it carries legal weight, which roads it covers, how it differs from the Chapter 8 document it is so often confused with, and which edition is current. It sits alongside the other rules that govern opening the highway, from the street works licence that grants the right to dig, through to the reinstatement specification that governs putting the road back. Getting the works signed and guarded correctly is a core part of any compliant reinstatement and street works job.

What the Red Book is, and who issues it

The Red Book is a statutory code of practice, not industry guidance. That distinction matters, because it is the difference between a document you are advised to follow and one you can be prosecuted for ignoring. It is issued by government ministers under primary legislation, and it sets out how the legal duty to work safely on the highway is to be met in practice.

The legal basis is worth stating in full, because it explains a great deal about how the document works.

A common point of confusion is the role of HAUC UK, the Highway Authorities and Utilities Committee, whose website hosts the online version of the code. HAUC does not write or issue the Red Book. It is one of the organisations the Department for Transport thanks for helping to prepare it, alongside the Health and Safety Executive, JAG(UK), Network Rail and others. Hosting a document and issuing it are very different things, and only ministers can issue a statutory code.

Street works or road works: why both are in the title

The name looks redundant until you understand that it covers two legally distinct activities. Street works are openings made by utility companies and their contractors, water, gas, electricity and telecoms, exercising a statutory right to place apparatus in the highway. Road works are works carried out by the highway authority itself, to build or maintain the road. Different parties, different legal footing, one shared safety code.

This is also why the code is issued under two separate Acts. The NRSWA 1991 power covers the street works side, the utility openings. The Highways Act 1980 power covers the authority's own road works. The current edition brought both firmly under the same code, which is why highway and road authorities in England, Wales and Northern Ireland must now comply with it for their own works, not only the utilities working in their streets.

Which roads the Red Book covers

The scope is defined by exclusion, and this is one of the most commonly misstated facts about the document. The Red Book applies to all highways and roads, except motorways and any dual carriageways with a speed limit of 50 mph or more. It does not, as some sources claim, apply only to roads at 40 mph or below.

In practical terms, that means every single carriageway, whatever its speed limit, and every dual carriageway up to but not including 50 mph, falls under the Red Book. The faster and more complex environments, motorways and high-speed dual carriageways, sit outside it. Those are governed instead by Chapter 8 of the Traffic Signs Manual, which is the source of a great deal of confusion, and the subject of the next section.

Red Book or Chapter 8: they are not the same document

This is the single most muddled point in the whole subject, and much of what is published online about it is simply wrong. You will find pages describing the Red Book as a condensed version of Chapter 8, or treating the two as interchangeable names for the same rules. They are separate documents, published under different powers, with different legal status.

The short version: the Red Book is the statutory code for the everyday street works environment, and it points you towards Chapter 8 for the higher-speed schemes it does not cover. One is a legal instrument, the other is a detailed traffic management manual. They work together, but they are not the same thing, and confusing them is how contractors end up applying the wrong reference to the wrong road.

What the code requires, in outline

The Red Book is a substantial document running to more than a hundred pages, and it is not a summary to be worked from second hand. In broad terms it is divided into three parts: Basic Principles, Operations, and Equipment and Vehicles. Between them they cover the general duties of everyone involved, the planning and risk assessment expected before work starts, the layout of signing, lighting and guarding around the site, the safe passage of pedestrians including wheelchair and pushchair users and people with sight loss, and how a site must be left safe when it is unattended overnight or at weekends.

The detail, the specific sign spacings, cone sizes and layout diagrams, belongs in the code itself and in the hands of the qualified operatives and supervisors applying it on site. What matters for anyone commissioning works is not memorising those figures, but understanding that they exist, that they are mandatory, and that a competent contractor treats them as a legal baseline rather than a target.

What happens if you do not comply

The duty underneath the Red Book is set out in section 65 of NRSWA, which requires an undertaker carrying out street works to secure that any part of the street that is broken up or open is adequately guarded and lit, and that the necessary traffic signs are placed and maintained. The Red Book is how that duty is discharged in practice, and its legal force is stated plainly in the code itself.

There is a corollary to this that works in the contractor's favour, and it is written into the code: compliance with the Red Book is taken as compliance with the legal requirements it relates to. In other words, doing it properly is not just about avoiding prosecution. It is the recognised way of demonstrating that the statutory safety duty has been met.

Which edition is current

The Red Book has been through three editions: 1992, 2001, and the current one, published in October 2013 and in force from 1 October 2014. The current edition has since had a second impression, with amendments, in June 2014, together with a separate errata sheet. Impressions after that are simply additional print runs of the same version, and the Department for Transport keeps the current edition available on its own publications page.

What this means if you are commissioning the works

Most guidance on the Red Book is written for the operative on the ground: which qualification to hold, which layout to set out. If you are a developer, a water company or a main contractor engaging someone to open the highway, your question is different. You are not setting out the cones yourself, but you carry an interest in the works being done to the code, because a badly guarded site is a liability that does not stay neatly with the subcontractor.

In practice, a Red Book compliant site looks like this: signing that gives approaching drivers clear and early warning, a properly delineated safety zone separating traffic from the working space, continuous and accessible provision for pedestrians past the works, and a site that is left demonstrably safe when nobody is on it. When you engage a contractor, the reasonable expectation is that they treat the code as the floor, not the ceiling, and that they can evidence it. It is a fair thing to ask about before work starts.

Where the Red Book sits among the street works rules

Opening the highway is a sequence, and there is a different instrument governing each stage of it. The Red Book is one link in that chain, the one that governs the works while the road is open.

Before anything is dug, a street works licence under Section 50 grants the right to place apparatus in the highway in the first place. While the works are live, the Red Book governs how the site is signed, lit and guarded, and a lane rental scheme may price how long you occupy the road. Once the work is done, reinstatement is governed by the Specification for the Reinstatement of Openings in Highways, with the accompanying HAUC standards setting out how the surface must be put back and guaranteed. Works that involve altering the highway itself, rather than just opening it, may also engage a Section 278 or Section 38 agreement.

The Red Book is the safety spine running through all of it. Understanding where it fits, and getting it right on site, is part of what separates a contractor who simply does the work from one who does it to standard. If you want the fuller picture of the rules behind opening the highway, our reinstatement and street works page sets out more.