Automated gate safety: what you are responsible for
An automated gate is legally machinery, and whoever has it installed carries duties for keeping it safe. In practice that means force limitation measured with a gauge, photocells covering the danger zones, guarded crushing and shearing points, a manual release, and a documented handover.
Powered gates are one of the few things you can buy for a house that are legally classed as machinery. That surprises people, and it matters, because it puts real duties on the person who has one installed and on anyone who is responsible for a site where one operates. This guide explains what those duties look like in plain terms.
Why a gate counts as machinery
Once a gate is powered, it becomes a machine that moves a heavy object through a space people use. UK law treats it accordingly, through the Supply of Machinery (Safety) Regulations for what is placed on the market, and through the Health and Safety at Work etc. Act and related duties where a gate serves a workplace or a shared site. The Door and Hardware Federation publishes the industry code of practice that competent installers work to. A compliant installation ends with a declaration of conformity and a technical file, not just a set of remotes.
The hazards, in order
- Crushing: a closing leaf against a pier, or a sliding gate against its receiving post. The classic serious injury.
- Shearing: hinge points on a swing gate, and the gap between a sliding gate and any fence or wall behind it.
- Drawing-in: gaps in a gate frame or between a gate and a fixed structure that can trap a hand or a limb as the gate moves.
- Impact: a gate closing on a person or a vehicle, especially where a driver cannot see the leading edge.
- Falling: a sliding gate coming off its rollers, or a swing leaf dropping off a failed hinge.
How a compliant installation deals with them
Force limitation. The gate must stop and reverse when it meets an obstruction, and the force it applies has to be inside defined limits. That is measured with a force gauge at specified points, not judged by pushing against it with a hand. The measurements should appear in your handover documents.
Photocells. Infrared beams across the opening detect anyone in the path. Most installations need more than one set: across the closing line, and often inside the swing arc or along the run-back of a slider.
Safety edges. Pressure-sensitive strips on leading and, where needed, trailing edges that stop the gate on contact. Common on sliding gates and on commercial entrances.
Guarding. Mesh or infill panels that stop a hand reaching into a hinge or a drawing-in gap, and covering of the run-back where a slider passes a fixed structure.
Manual release. A keyed lever on each operator that disengages the drive so the gates move by hand in a power cut. Everyone in the household should be shown how to use it, not just told it exists.
Signage and controls. A warning sign at the entrance, and controls sited so an operator can see the gate when using a hold-to-run function.
Signs an existing gate needs attention
Any of these is worth a force test and safety check, and none of them is a reason to panic: the gate closes harder or faster than it used to; it does not reverse when it touches something; photocells are dirty, misaligned or clearly missing; a hinge or roller is noisy or has visible play; nobody living there knows where the manual release key is; there is no paperwork at all. Older installations on Teesside driveways commonly fail on force settings that have drifted as hinges wore, which is a modest adjustment rather than a rebuild.
Who carries the responsibility
For a domestic gate, the homeowner is the one who has to keep the installation safe and maintained. Where a gate serves a workplace, a block of flats, a shared drive or any site where the public can reach it, the duty holder responsibilities are firmer, and evidence of risk assessment, safety testing and maintenance records is what proves they were met. If you manage a site with an automated gate and cannot produce that evidence, that is the gap to close first.
Maintenance is part of compliance
Safety devices drift, hinges wear, and salt air near the coast accelerates both. An annual service that checks alignment, tests the safety devices, re-measures closing force and records the result is the practical way of keeping an installation compliant, and it typically costs £110 to £180. Keep the reports, because they are the record that shows the gate has been looked after.