- Location
- Swansea, West Glamorgan
- Main postcode district
- SA1
- Nearby (straight line)
- Briton Ferry (5 miles), Gorseinon (5 miles) and Neath (7 miles)
- Survey and quote
- Free, with a fixed written quote
Dock traffic lights are red and green signals mounted outside and inside a loading bay to tell the driver and dock staff when it is safe to move or load. Interlocks are control links that stop equipment operating out of sequence, for example preventing the door opening until the trailer is restrained, or the leveller operating until the door is fully open.
How does this suit sites in Swansea?
If a site in Swansea has had door panels damaged by levellers raised too early, a leveller-to-door interlock is a straightforward fix to consider. Older docks in Swansea with separate door and leveller controls can be brought into a proper sequence by adding interlocks that stop equipment working out of order.
Distribution centres near Swansea taking trailers from many different hauliers benefit from a signal every driver understands, regardless of language or familiarity with the site.
It starts with a free site survey in Swansea, where we measure the openings, check the dock and talk through how the bay is used. You then receive a fixed written quote. Once you accept, we manage the job: specialist installation engineers carry out the work under our management, planned around your deliveries, and out-of-hours working can be arranged. At handover we test everything with you and leave the documentation.
Can traffic lights and interlocks be added to older loading bays?
Yes, traffic lights and interlocks can be added to most older loading bays, although some need new control panels before the interlocks can work.
- Manual doors: a door position switch can confirm the door is fully open or closed, which lets lights and leveller interlocks work even without a motor.
- Older powered doors and levellers: basic control boxes may not have connections for interlocks, so a combined bay panel can replace separate controls.
- Mixed equipment: doors and levellers from different suppliers can usually be brought under one interlock panel, so every bay works the same way.
Interlocks cannot make faulty equipment safe. If a door or leveller has a defect, it should be repaired before interlocks are added, and the survey will flag anything we find. Upgrading lights and interlocks at the same time as replacing a door or leveller is often the most economical moment to do it.
What does HSE guidance say about stopping drivers leaving too early?
HSE guidance (followed by HSENI in Northern Ireland) says there should be safeguards against drivers driving away from a loading bay too early, and it names traffic lights as one of the measures. Vehicle or trailer restraints, and the person in charge keeping keys or paperwork until it is safe, are the others listed in HSE's guide to workplace transport safety (HSG136) and its loading factsheet.
Traffic lights are a signal, not a physical barrier, so they work best as part of a clear procedure or alongside a restraint. Your risk assessment should decide the combination. In Northern Ireland the regulator is HSENI.
Interlocks also touch on door safety law. Under regulation 18 of the Workplace (Health, Safety and Welfare) Regulations 1992, or the Northern Ireland 1993 equivalent, powered doors need suitable and effective features to prevent them trapping anyone. Interlocks must never bypass those features, and door control work should respect BS EN 12453, the standard for safety in use of power-operated doors.
Read more in our guide to preventing drive-away and trailer creep.
The same published guide range applies across Wales; access, out-of-hours working and site conditions are confirmed at the free survey.
What do we check at the survey?
- Access for deliveries, cranes or lifting equipment during installation
- Escape routes and pedestrian doors close to the bay
- Asbestos register and any other site hazard information
- Yard gradient and the slope of the approach to the dock
- Wall and steel structure for door, shelter and bumper fixings
- Traffic routes for vehicles and separation of pedestrians
Options to discuss
Standalone LED traffic lights
A red and green pair for each bay, one outside for the driver and one inside for dock staff, switched manually from a control beside the door.
Door-linked lights
Lights that change automatically with the door position, using a door switch or a signal from the door control panel, so the outside light turns red as the door opens.
Which rules apply in Wales?
Equipment fitted in Wales may carry the UKCA or the CE mark. For each door, leveller or shelter installed in Swansea, we hand over the documentation that comes with it. Permissions are never assumed either way: whether planning permission or Building Regulations approval is needed, we check what applies at survey and tell you before dates are agreed.
Questions about dock traffic lights and interlocks in Swansea
Is VAT included in your guide prices for dock traffic lights and interlocks?
No. Our customers are businesses, so guide prices exclude VAT, which is added at the standard rate. The same guide range applies in West Glamorgan as everywhere else: for dock traffic lights and interlocks, it is £650 to £3,400 per bay, excluding VAT. It covers supply and fit for a typical installation. Your fixed written quote after the free survey shows the net price, the VAT and exactly what is included.
How do you price dock traffic lights and interlocks for a site in Swansea?
Guide budgets for supply and fit are £650 to £3,400 per bay, excluding VAT. The figure moves with size, insulation, the operator, electrics, access, any pit or groundworks and out-of-hours working. Where levellers are involved, the guide assumes an existing, sound pit. After the free survey you receive a fixed written quote, and that is the price for the agreed scope.
What details do you need from us to quote for dock traffic lights and interlocks?
To get started, send the site address in Swansea, the number of bays or openings, approximate sizes, and photos of the dock from inside and outside. Tell us what vehicles you load, what goods you handle and any temperature requirements. Drawings help on new builds. We then arrange the free survey and confirm the details before the written quote is issued.
Can interlocks be fitted to a manual loading bay door?
Yes. A door position switch fitted to a manual door can confirm when it is fully open or fully closed. That signal lets the traffic lights change automatically and stops the leveller being raised until the door is out of the way.
Which way round do the inside and outside lights work?
The inside and outside lights always show opposite colours. While a trailer is being loaded, the outside light is red so the driver stays put and the inside light is green so staff can work. When loading is finished and the door is closed, the inside light turns red and the outside light turns green for the driver.
Dock traffic lights and interlocks near Swansea
Close neighbours of Swansea with their own pages here: Briton Ferry (5 miles), Gorseinon (5 miles) and Neath (7 miles). Choose one to see coverage details for that town.
Other loading bay services in Swansea
Full guide to dock traffic lights and interlocks · Everything we do in Swansea
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