Street Works & NRSWA — Signing, Lighting & Guarding Rules for Trades (2026)

What is NRSWA?

NRSWA is the New Roads and Street Works Act 1991 — the primary legislation governing how anyone opens up the public highway in England, Wales and Scotland. It sets out the rights and duties of utilities, contractors and highway authorities when work is carried out in a street. If you break ground in a road, footway (pavement), footpath, cycleway or verge that the public has a right to use, NRSWA applies to you, whether you're a water company, a fibre installer, a drainage contractor or a one-van groundworker.

The Act balances two things: letting essential underground work happen, and protecting the people who use the street while it does. So the law covers who is competent to do the work, how the site is signed and guarded, when the authority must be told, and to what standard the hole is filled back in. None of it is optional — working in the highway without meeting these duties is an offence.

SWQR Cards — Who On Site Needs Qualifying

Under NRSWA, the people doing street works must be qualified, and that competence is proven through the Street Works Qualifications Register (SWQR). Each registered person holds an SWQR card showing the units they have passed. There are two roles:

• Operative: the person physically carrying out the work — excavating, guarding, reinstating.
• Supervisor: the person responsible for supervising the operatives and ensuring the work meets the standards.

The qualification is unit-based. An Operative or Supervisor is assessed on specific units such as signing, lighting and guarding; locating and excavating to expose underground apparatus; reinstatement of the various layers (sub-base, binder course, surface); and reinstatement in modular surfaces or footways. You only hold the units relevant to your work, but each unit must be on the card of someone on site doing that activity.

The rule that catches contractors out: a site must have at least one trained Operative and a trained Supervisor for the units being carried out. A Supervisor need not be present full-time for every task, but must be reasonably available and responsible for the site. You cannot run a job with operatives alone, nor have a Supervisor card-holder digging without a qualified Operative present for that unit.

SWQR cards are not for life — each unit must be re-assessed every 5 years to stay valid. Let a card lapse and the holder is no longer qualified for that unit, meaning you may be working illegally without realising. Track expiry dates like insurance renewals and book re-assessments well before they run out.

The Red Book — Signing, Lighting & Guarding

The most important document for day-to-day site safety is the Code of Practice "Safety at Street Works and Road Works" — known in the trade as the "Red Book". It is the approved code telling you exactly how to set out signs, cones and barriers for any layout, from a small footway dig to a full carriageway closure. Following it is how you discharge your legal duty to protect the public and your own operatives. A correctly signed and guarded site is built from the same blocks regardless of size:

• Advance warning signs: placed ahead of the works to tell approaching traffic what to expect, at distances set by the road's speed.
• Cones and the lead-in taper: a tapered line of cones guiding traffic away from the excavation, with a matching exit taper bringing it back.
• The safety zone: a buffer of clear space between the cones and the actual works that no one stands or stores material in — it absorbs an errant vehicle before it reaches your people.
• Road plates: steel plates ramped and pinned over an open trench so traffic or pedestrians can cross safely when the dig must stay open.
• Pedestrian barriers: continuous, tappable barriers (not loose cones) channelling people safely past the works.
• Lighting: lamps on signs and barriers so the layout is visible after dark and in poor weather.

Where the works narrow the carriageway, you must control the two-way traffic. The Red Book sets out the options in order of increasing flow: give-and-take for short, low-traffic obstructions where drivers can see and pass each other; priority signs giving one direction precedence; and portable traffic signals or manual stop/go boards for busier or longer sites. Choose the method that matches the road, not the one that's quickest to set up. For precise sign faces, dimensions and layout diagrams, the Red Book works alongside Chapter 8 of the Traffic Signs Manual — the detailed reference for temporary traffic management layouts.

Permits, Notices and the Highway Authority

You cannot simply turn up and dig. NRSWA requires you to tell the highway authority about the works, and in most areas that now means applying through a permit scheme rather than the older noticing system. Under a permit scheme you apply for permission to occupy the highway for a defined activity, location and duration, and the authority can attach conditions — timing restrictions, traffic-management requirements, or working hours — before granting it.

Where a permit scheme is not in operation, a notice (advance, immediate or works notice depending on urgency) must still be served. Either way the principle is the same: the authority coordinates everyone working in its streets, and starting work without the correct permit or notice is a chargeable offence. Allow lead time in your scheduling — a same-day start on a non-emergency job is rarely possible.

Reinstatement Standards — Filling the Hole Back In

How you put the highway back is regulated as tightly as how you opened it. The governing document is the Specification for the Reinstatement of Openings in Highways (SROH). It dictates the materials, layer thicknesses and compaction for every type of surface — flexible (bituminous) roads, modular surfaces such as block paving, and footways — so the reinstatement performs as well as the original construction.

Crucially, the SROH attaches guarantee periods to your reinstatement. Whoever did the works stays responsible for the reinstatement for a set period (commonly two years for most, longer for deeper structural layers). If it settles, fails or becomes a trip hazard within that period, you are liable to put it right. Cutting corners on compaction to save an hour can come back as an expensive return visit — and a coring sample by the authority will show exactly what you did.

Protecting Pedestrians, the Disabled and the Public

Footway works carry a duty to keep a safe, usable route for everyone — including wheelchair users, people with prams and those with visual impairments. The Red Book sets minimum walkway widths and requires continuous, detectable barriers rather than gaps people can wander into. Where you cross a footway dig, provide a ramped, non-slip walkway with tactile and tappable edges so a cane user can follow the route.

When you leave site, the works must be made safe out of hours: excavations covered or guarded, barriers and lamps left lit, plant and spoil secured. "Making safe" at the end of each shift is not a courtesy — it is when an unattended site is most likely to injure the public, and exactly what an inspector will check on an evening drive-past.

NRSWA and CDM — Two Sets of Rules, Side by Side

NRSWA is distinct from the Construction (Design and Management) Regulations 2015 (CDM), but the two operate together on a street works job. CDM governs the management of construction work generally — planning, the principal contractor's duties, the construction phase plan, and managing risk to workers. NRSWA layers the highway-specific duties on top: who is SWQR-qualified, how the public is protected by signing and guarding, and how the surface is reinstated. You comply with both; one does not replace the other.

Quick Reference: SWQR Units and Who Needs Them

Practical Compliance Tips

• Keep a card register: log every operative's SWQR units and expiry dates, and book re-assessments at least three months before they lapse.
• Carry the Red Book and Chapter 8 on site: a laminated layout sheet for your common job types removes guesswork when setting out.
• Photograph the signed site: a quick photo of your taper, safety zone and barriers at set-up is your evidence if an inspector or claim ever questions the layout.
• Apply for permits early: build authority lead times into your scheduling so a missing permit never stops a booked job.
• Compact properly, every layer: a coring failure means a return visit at your cost within the guarantee period — and a black mark with the authority.
• Make safe every shift: never leave an excavation unguarded, unlit or uncovered overnight, even on a quiet street.

The Penalties for Getting It Wrong

NRSWA breaches are not minor paperwork issues. Highway authorities inspect street works and can issue fixed penalty notices (FPNs) for failures such as working without a valid permit, defective signing and guarding, or sub-standard reinstatement. Persistent or serious offences can lead to prosecution and unlimited fines in the magistrates' court, and card-holders can find their competence — and the firm's reputation with the authority — called into question.

The worst outcome is not financial. An unguarded excavation or missing barrier can put a pedestrian, cyclist or driver in hospital, bringing investigation under both NRSWA and health and safety law, with the prospect of corporate and personal liability. The cost of doing it right — keeping cards current, signing to the Red Book, reinstating to SROH — is trivial next to the cost of getting it wrong. Treat compliance as part of the job, not an overhead.