- Location
- Porthcawl, Mid Glamorgan
- Main postcode district
- CF36
- Nearby (straight line)
- Bridgend (6 miles), Maesteg (9 miles) and Briton Ferry (12 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.
Where does this fit at a dock in Porthcawl?
Distribution centres near Porthcawl taking trailers from many different hauliers benefit from a signal every driver understands, regardless of language or familiarity with the site. Older docks in Porthcawl with separate door and leveller controls can be brought into a proper sequence by adding interlocks that stop equipment working out of order.
Whether your unit in Porthcawl has one dock or twenty, the survey looks at each bay's existing controls before we quote a fixed price in writing.
Your loading bay stays our responsibility from the survey to the handover. In Porthcawl, the survey and written quote are free, and the quoted price is fixed for the agreed scope. Installation is carried out by specialist engineers working under our management, at times planned with you to protect your loading schedule. Out-of-hours work is available by arrangement. We finish by testing the equipment and handing over its documentation.
Which interlocks should a loading bay have?
The most useful loading bay interlocks stop the door opening until the trailer is in place or restrained, and stop the leveller operating until the door is fully open. Beyond that, the right set depends on the equipment fitted and your risk assessment.
- Door to restraint: the door cannot open until the restraint is engaged or a trailer is detected.
- Leveller to door: the leveller cannot be raised until the door is fully open, which prevents the lip hitting door panels.
- Door to leveller: the door cannot close until the leveller is back in its parked position.
- Restraint release: the restraint only releases once the door is closed and the leveller parked.
- Shelter to trailer: an inflatable shelter only inflates when a trailer is docked.
On a bay without a restraint, a trailer presence sensor can take its place in the door logic, although it confirms a trailer is there rather than holding it. Combining interlocks with vehicle restraints gives the strongest protection against drive-away.
How do inside and outside dock traffic lights work together?
Inside and outside dock lights always show opposite colours: when the driver sees red, dock staff see green, and the other way round. Each light is aimed at a different person, so each one only ever gives one instruction.
- Outside light, facing the driver: red means stay on the bay because loading is in progress; green means the bay is clear to leave or to reverse on to.
- Inside light, facing dock staff: green means the trailer is in place and it is safe to open the door and load; red means do not open the door or enter the trailer.
Lights can be switched in three main ways:
- Manually, by a switch beside the door, relying on dock staff to change it at the right moment.
- By door position, so opening the door automatically turns the outside light red.
- By the restraint, so the light only changes when the trailer is physically held.
The same published guide range applies across Wales; access, out-of-hours working and site conditions are confirmed at the free survey.
Survey checklist for your dock
- Temperature requirements for chilled, frozen or ambient goods
- Power supply at each bay, including three-phase availability
- Access for deliveries, cranes or lifting equipment during installation
- Working hours, shift patterns and windows for out-of-hours work
- Wall and steel structure for door, shelter and bumper fixings
- Clear opening width and height for each door
Options to discuss
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.
Full bay interlock panel
A single control panel that runs the door, leveller, restraint and shelter in the correct sequence, with indicators showing which step is active or blocked.
Regulations and approvals in Wales
HSE regulates workplace safety in Wales. Loading bays in Porthcawl need doors that meet regulation 18 of the Workplace (Health, Safety and Welfare) Regulations 1992, work equipment maintained under PUWER, and safeguards that stop vehicles leaving the dock too early. We check what applies at survey and build those measures into the design.
Questions about dock traffic lights and interlocks in Porthcawl
How do you price dock traffic lights and interlocks for a site in Porthcawl?
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.
Do you remove and dispose of the old equipment?
Yes, where it is part of the scope. When we replace doors, levellers, shelters or seals at a site in Porthcawl, removal and disposal of the old equipment can be included and is itemised in the quote, so it is clear what is covered. If anything should be kept, such as a frame or motor that is still serviceable, we agree that at survey.
Do you cover Porthcawl for dock traffic lights and interlocks?
Yes. We take on dock traffic lights and interlocks for businesses in Porthcawl and across Mid Glamorgan. We survey the site, provide a fixed written quote and manage the installation, with specialist installation engineers working under our management. Visits are arranged in advance at a time that suits your operation, and the same single contact stays with the job through to handover.
Will interlocks slow down my loading operation?
Interlocks add a fixed sequence, but each step takes only moments and staff soon get used to it. In practice many sites find the sequence saves time overall, because there are fewer arguments about when to open the door and less damage from levellers being raised into part-open doors.
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 Porthcawl
Close neighbours of Porthcawl with their own pages here: Bridgend (6 miles), Maesteg (9 miles) and Briton Ferry (12 miles). Choose one to see coverage details for that town.
Other loading bay services in Porthcawl
Full guide to dock traffic lights and interlocks · Everything we do in Porthcawl
Whether it is a new bay or a fault on an existing one, call us or request a quote for your site in Porthcawl.