A warehouse safety barrier is a fixed physical guard that keeps a forklift, a pallet truck or a tug on one side of a line and people, racking, plant or a drop on the other. That is the whole job, and it is worth stating plainly because the phrase "safety barrier" is used for at least three different products that do three different things: barriers that separate pedestrians from vehicle routes, barriers that absorb an impact to protect racking or equipment, and guard rails that stop a fall from a mezzanine or dock edge. This guide explains what UK health and safety guidance actually expects, the three main types of safety barrier and where each belongs, what "minimum height" really means, and how to specify a fixed steel run so it goes in once and stays put. It links to the safety barriers we stock; the figures for those products are taken from the live listings, and where a listing does not publish a number we say so rather than guess.
What UK law and HSE guidance expect
There is no regulation that says "install safety barriers". What the law does say is that pedestrians and vehicles must be able to move around a workplace safely. The Workplace (Health, Safety and Welfare) Regulations 1992, Regulation 17, require traffic routes to be organised so that pedestrians and vehicles can circulate in a safe manner, with sufficient separation between them where they share a route. The Management of Health and Safety at Work Regulations 1999 require the risk to be assessed and controlled. The Health and Safety Executive's practical guidance sits in HSG136, A guide to workplace transport safety, and for storage operations in HSG76, Warehousing and storage. Both follow the same hierarchy: first try to keep vehicles and people apart altogether, then, where they must share space, separate them physically, and only then rely on floor markings, signs and rules. Physical segregation is treated as the most effective control because it works whether or not anybody is paying attention.
Two other pieces of legislation are relevant depending on what the barrier is protecting. Where a barrier is stopping a fall, the Work at Height Regulations 2005 apply, and their Schedule 2 sets the guard-rail dimensions discussed below. Where an impact barrier protects pallet racking, the racking itself falls under PUWER and the SEMA inspection regime, which is covered in our racking inspection guide. Being struck by a moving vehicle is consistently one of the main causes of fatal injury to workers in HSE's annual statistics, and workplace transport is the reason most warehouse barrier runs get specified.
The three main types of safety barrier
Buyers asking "what are the three main types of safety barrier" usually get an answer about materials. The more useful split is by the job the barrier does, because that decides the height, the strength and the fixing before you get to steel or polymer.
1. Segregation barriers: keeping people off vehicle routes
These run along the edge of a pedestrian walkway, around a doorway or across the end of an aisle so that a person cannot step into a forklift route and a forklift cannot drift into a walkway. They need to be continuous, visible and strong enough to stop a low-speed contact, but they are not designed to arrest a fully loaded truck at speed. A fixed, floor-bolted tubular steel rail run is the standard product here. Openings for people are left at controlled points, ideally with a staggered gap or gate so nobody walks straight out into traffic.
2. Impact barriers: protecting racking, plant and structure
These sit where trucks turn, reverse and manoeuvre: at rack ends, at the corners of a block of racking, around machinery, columns, control panels, dock doors and charging areas. The point is to take the hit so that the racking or plant does not. For pallet racking specifically the products are upright guards, rack-end barriers and column guards, and we cover those in detail in pallet racking protection: upright guards and barriers. For plant and free-standing equipment, a corner rail unit that forms a protective cage around the machine is the usual answer.
3. Edge protection: preventing falls
Guard rails on a mezzanine edge, a loading dock lip, a raised platform or a pit are safety barriers too, but they are governed by fall-prevention rules rather than traffic rules and are specified to a different standard. They are part of the structure they protect and are usually supplied with it; see our guide to mezzanine floors and platforms and the loading bay safety guide for where they are needed. We mention them here so that a fall-protection rail is never confused with a segregation rail: the two look similar and are not interchangeable.
Where a warehouse needs safety barriers
A walk round the building with the traffic route plan in hand finds most of them. The places HSE guidance and a typical risk assessment point to:
- Pedestrian walkways alongside vehicle routes, especially the main route from the personnel door to the offices, canteen and welfare areas.
- Doorways and blind corners where a person on foot emerges into a truck route without a sightline.
- Aisle ends and rack corners, where a turning truck swings its rear end or clips an upright with the counterweight.
- Loading bays and dock doors, where lorries, dock levellers, pallet trucks and drivers on foot all meet; wheel chocks, dock bumpers and traffic lights are the companion controls.
- Fixed plant and services: compressors, control panels, sprinkler risers, gas and electrical intakes, battery charging points, fire exits and fire-fighting equipment that must not be blocked or struck.
- Areas where powered handling equipment is charged or parked, so that a walkway does not pass behind reversing trucks.
- Edges and drops: mezzanine perimeters, dock edges, pits and ramps, which need fall-protection rails rather than segregation rails.
The general principle from HSG136 is to design the pedestrian and vehicle routes first, then use barriers to hold the design in place. A barrier bolted to the floor where the route naturally runs is respected; one that forces a long detour tends to be climbed over or removed, at which point it is worse than no barrier because everyone assumes protection that is not there.
Is there a minimum height for a safety barrier in the UK?
It depends which type. For fall protection the answer is specific: Schedule 2 of the Work at Height Regulations 2005 requires a top guard rail at least 950 mm above the edge for work at height, with no unprotected gap greater than 470 mm between the top rail, any intermediate rail and the toe board. That is why a mezzanine handrail and a segregation rail should never be swapped for each other.
For segregation and impact barriers there is no statutory minimum height. The regulations require the segregation to be effective, and HSE guidance describes barriers as a means of achieving it, leaving the specification to the risk assessment. In practice a pedestrian segregation rail is specified so that it is clearly visible from a truck cab, cannot be stepped over casually and presents a rail at a height that contacts the body of a truck rather than passing under its forks. A double-rail unit gives a top rail and one intermediate; a triple-rail unit adds a lower rail that also catches a low fork or a pallet corner. If your risk assessment or an insurer asks for a specific height, take it from that document rather than from a supplier's "standard".
Fixed steel rail or flexible polymer barrier?
Fixed welded steel barriers are the traditional warehouse product. A welded tubular steel rail bolted to the slab is rigid, cheap to make in long runs, easy to see in yellow, and takes low-speed contact without complaint. Its weakness is that a heavy impact transfers load straight into the floor fixings and the slab, so a hard strike can crack concrete, shear anchors or bend the rail so that it needs replacing.
Flexible polymer and modular barrier systems are designed to deflect and recover. Their posts and rails absorb an impact and spring back, which protects both the floor and the barrier, and the modular components can be reconfigured when the layout changes. They cost more per metre, and because the rail moves on impact they need a small clearance behind them. For a busy distribution centre with frequent contact, the polymer system usually pays for itself in avoided floor repairs; for a run that is there to define a walkway and is rarely touched, fixed steel is the economical choice.
We stock both. The GPC Protective Rail System is the fixed steel option, and the McCue SafeStop GuardRail is the flexible modular option; the listing describes floor-mounted posts and flexible rails with shock-absorbing uprights, a low-level FloorGuard add-on and a Spinner add-on to deflect glancing blows. The McCue system is quoted rather than priced on the site, so ask us for a price on your layout.
Specifying a fixed steel barrier run
The GPC rail system is the product most of our customers use for walkways, aisle ends and plant protection, so it makes a good worked example. Every figure below is from the listings.
- Construction: 100 mm welded heavy-duty square tubular steel, powder coated yellow. The listing does not publish the tube wall thickness or the overall rail height.
- Rail count: a double-rail system (top and intermediate rail) or a triple-rail system (top, intermediate and low rail).
- Straight lengths: the triple-rail system is listed in 1,220 mm, 1,830 mm and 2,440 mm units; the double-rail system in a 2,440 mm unit. Runs are made up from these modules, so plan the walkway length in 2,440 mm bays and use a 1,220 mm or 1,830 mm unit to make up the difference.
- Corner units: both systems offer a corner unit, and the listing notes that the corner rail gives the option of a protective cage around equipment, which is how a compressor or a control panel gets boxed in.
- Floor fixing: 200 × 200 mm square floor plates with pre-drilled holes of approximately 12 mm. Fixings are not supplied. Choose an anchor suited to the slab: through-bolt or resin anchors into sound concrete are the norm, and the anchor manufacturer's edge-distance and embedment figures decide how close to a joint or slab edge a post can sit.
- Use: the manufacturer describes it as ideal for dividing manufacturing units and equipment in warehouses, which matches the segregation and plant-protection jobs above rather than heavy impact protection.
Two practical points that the listing leaves to you. First, a segregation run only works if it is continuous, so include the corner units and the make-up lengths in the count rather than leaving a gap where a person will inevitably walk through. Second, mark the floor on the vehicle side of the rail as well; the rail stops the contact, but the hatching is what makes drivers give it room.
Colour, marking and what goes with the barrier
Yellow is the convention for safety barriers because it contrasts with grey floors and racking and is already read as a hazard colour, but there is no rule that a barrier must be yellow. What the regulations do require is that traffic routes are suitably indicated where necessary, so a barrier run is normally paired with floor markings, "pedestrians only" and "forklift trucks operating" signs to BS EN ISO 7010, and mirrors at blind corners. For racking, load notices and a formal inspection regime sit alongside the physical guards. A barrier is one line in a workplace transport risk assessment, and our warehouse health and safety guide sets out the rest of that assessment.
Barriers and the equipment on the other side of them
The vehicles a barrier is protecting people from are usually the ones in our own catalogue: pallet trucks, pallet stackers and electric tugs as well as forklifts. Safe operation of those trucks is the other half of the control, and our guide to using a pallet truck safely covers the operator side. Where the barrier is protecting pallet racking, the racking's own protection, load notices and inspections are covered in the racking guides linked above.
What we do not stock
Our safety barrier range is the fixed GPC steel rail system and the McCue SafeStop modular system. We do not stock expandable or retractable barriers, plastic chain-and-post or cone barriers, temporary event or crowd barriers, car park barriers, Armco highway-type beam barriers, bollards sold on their own, or fall-protection handrails sold separately from a mezzanine or platform. We do not offer hire or installation. For lockable enclosures rather than open barriers, see our storage cages; for the guards fitted to racking itself, see the racking protection guide. The full range is on the safety barriers collection.
When you lay out barriers, keep emergency routes clear. Our Fire Safety Order 2005 guide explains what the law expects of the responsible person.