- Location
- Bonnyrigg, Edinburgh and the Lothians
- Main postcode district
- EH19
- Nearby (straight line)
- Musselburgh (5 miles), Penicuik (6 miles) and Edinburgh (6 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.
Why do sites in Bonnyrigg choose this?
New warehouses in Bonnyrigg can have lights and interlocks wired in during the electrical fit-out, avoiding retrofit cabling and keeping every bay on one control standard. Older docks in Bonnyrigg 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 Bonnyrigg taking trailers from many different hauliers benefit from a signal every driver understands, regardless of language or familiarity with the site.
If you are planning dock traffic lights and interlocks for a site in Bonnyrigg, expect four stages. A free survey and fixed written quote come first. We then agree a programme with you, including any out-of-hours work. Specialist installation engineers carry out the installation under our management, with us as your single point of contact. Finally, the equipment is tested, your staff are shown how it works and everything is handed over with its documentation.
How much do dock traffic lights and interlocks cost?
Dock traffic lights and interlocks typically cost £650 to £3,400 per bay, supplied and fitted, excluding VAT. A pair of manually switched LED signals sits at the lower end, while a full interlock panel linking door, leveller, restraint and shelter sits towards the top.
What moves the price:
- Level of control: standalone lights, door-linked lights or a full interlocked sequence.
- Existing control panels: modern door and leveller panels often accept interlocks directly; older panels may need replacing with a combined bay panel.
- Sensors: door position switches, trailer presence sensors and restraint signals each add parts and wiring.
- Cable runs: distances between lights, panels and the power supply.
- Number of bays and timing: repeat bays reduce the cost per bay, while out-of-hours working adds to it.
These are guide budgets. After a free site survey we send a written quote, and that quote is the fixed price. VAT is added at the standard rate.
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.
The same published guide range applies across Scotland; access, out-of-hours working and site conditions are confirmed at the free survey.
What do we check at the survey?
- Wall and steel structure for door, shelter and bumper fixings
- Condition of any existing leveller pit, kerb angles and pit drainage
- Wheel guide positions and yard markings for reversing vehicles
- Temperature requirements for chilled, frozen or ambient goods
- Yard gradient and the slope of the approach to the dock
- Forklift and pallet truck loads crossing the leveller platform
Options to discuss
Restraint interlock package
Door, lights and vehicle restraint tied together so the door only opens once the trailer is held and the restraint only releases when loading is finished.
Trailer presence sensors
Sensors that detect a trailer on the bay, used to switch lights, enable the door or trigger an inflatable shelter where no restraint is fitted.
What do the rules in Scotland mean for the work?
Energy standards for buildings in Scotland are set out in Section 6 of the Building Standards Technical Handbook. For new or replacement loading bay doors in Bonnyrigg, we confirm the figure that applies to your project and check what applies at survey, rather than relying on rules written for elsewhere in the UK.
Questions about dock traffic lights and interlocks in Bonnyrigg
Can you work alongside our main contractor on a new build in Bonnyrigg?
Yes. For new warehouses and fit-outs, we can supply and install the dock package as part of a wider project, working to the main contractor's programme, site rules and permits. We will need drawings, dock levels and the programme, and we coordinate pit details, power supplies and door openings with the relevant trades before installation begins.
Which building and safety rules apply to a site in Bonnyrigg?
It depends on which UK nation the site is in. England and Wales use Building Regulations approval, Scotland uses building warrants and Northern Ireland uses building control approval from the council. Workplace safety is regulated by HSE in Great Britain and HSENI in Northern Ireland, and energy rules differ between nations. For your site in Bonnyrigg, we check what applies at survey and design to it.
Do you cover Bonnyrigg for dock traffic lights and interlocks?
Yes. We take on dock traffic lights and interlocks for businesses in Bonnyrigg and across Edinburgh and the Lothians. 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.
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.
Can you add lights and interlocks across a whole dock in one project?
Yes. A whole-dock project is usually phased bay by bay so most doors stay in use, and every bay ends up on the same control standard. That consistency makes training easier for staff and drivers, and it simplifies servicing because every bay behaves in the same way.
Dock traffic lights and interlocks near Bonnyrigg
Looking beyond Bonnyrigg? Our pages for Musselburgh (5 miles), Penicuik (6 miles) and Edinburgh (6 miles) describe the same loading bay services and how to get in touch.
Other loading bay services in Bonnyrigg
Full guide to dock traffic lights and interlocks · Everything we do in Bonnyrigg
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