Construction Site Safety & Two-Way Radios

What Does the HSE Say About Two-Way Radios?

The HSE's guidance on construction site rules states that the use of radios and mobile phones is among the subjects that site rules should address.

Under the Construction (Design and Management) Regulations 2015 (CDM 2015), construction projects require appropriate arrangements for managing health and safety, including a construction phase plan, site rules and suitable inductions.

This does not mean every construction company is legally required to provide two-way radios.

Instead, it means communication arrangements should be considered as part of managing site risks, with suitable methods selected for the activities being undertaken.

HSE guidance on safety-critical communications also recommends identifying who needs to communicate, what information must be exchanged and which communication methods are appropriate.

These may include face-to-face instructions, written procedures, telephone systems and radio communication.

For construction businesses, the important question is whether employees can communicate effectively when their work requires it.

A 2026 HSE Case Highlights the Risks of Radio Miscommunication

In May 2026, the HSE reported a prosecution involving SMW Limited following a serious machinery incident at a fuel-processing plant near Glasgow.

The incident occurred in June 2023 when an employee was attempting to clear a blockage in industrial equipment.

Communication between the employee and the control room took place using handheld radios. The two locations were not within sight of one another, and the radio equipment was subject to interference.

Following a misunderstanding over the radio, the employee believed that machinery had been switched off.

The equipment was still operating, and the worker suffered serious hand injuries.

HSE's investigation identified failures to prevent access to dangerous moving machinery.

The case demonstrates a particularly important safety principle: radio communication must not be treated as a substitute for proper machinery isolation, guarding or other essential physical safety controls.

Although this incident occurred at an industrial processing facility rather than a construction site, the lessons are relevant wherever workers rely on communication between separate locations.

For construction businesses, it reinforces the importance of clear instructions, confirmation that messages have been understood and procedures that do not depend entirely on verbal assurances.

Where Two-Way Radios Can Support Construction Site Safety

Different construction activities require different communication arrangements.

On smaller sites, direct verbal communication may be sufficient for many routine tasks.

However, larger projects, noisy working environments and activities involving mobile plant can create circumstances where additional communication equipment is beneficial.

Lifting Operations and Crane Communication

Lifting operations require effective coordination between authorised personnel.

Depending on the circumstances, communication may involve recognised hand signals, direct verbal instructions or suitable radio systems.

Radio communication can be particularly useful where the crane operator and signaller cannot maintain direct visual contact.

HSE guidance for offshore crane operations provides an example of the importance of established radio protocols, including confirmation that instructions have been received and understood.

It also highlights the need for crane movements to stop if essential communication is lost during blind lifting operations.

For construction sites, any radio procedures used during lifting operations should form part of a properly planned safe system of work, developed by competent personnel.

Radios do not replace lifting plans, competent signallers, appropriate exclusion zones or other required controls.

Vehicle Movements and Traffic Management

Construction sites frequently involve deliveries, reversing vehicles, mobile plant and pedestrians sharing limited space.

Effective traffic management should prioritise separating vehicles and pedestrians, providing suitable routes and minimising reversing wherever possible.

Where trained traffic marshals or other authorised personnel need to communicate with drivers or supervisors, two-way radios may provide an additional means of coordination.

However, radio communication must not replace physical segregation, visibility arrangements or agreed signalling procedures.

Working Across Large or Complex Sites

Communication can become more difficult when employees are spread across multiple buildings, floors or geographically separated work areas.

Professional two-way radio systems can help site supervisors maintain contact with teams without relying on mobile telephone calls.

Where necessary, a radio coverage survey can identify areas where additional infrastructure, such as repeaters, may be required.

Coverage should be checked in the actual working environment, particularly where steel structures, reinforced concrete or temporary buildings could affect radio performance.

Emergency Communication

Construction companies need suitable arrangements for raising alarms and coordinating responses to emergencies.

Depending on the site and its risk assessment, radios may form part of these arrangements.

For example, authorised personnel may use radios to notify supervisors of an incident, request assistance or communicate information to designated response teams.

However, radio systems must be supported by established emergency procedures, trained personnel and alternative communication methods where necessary.

Lone Workers and Isolated Areas

Some construction activities involve employees working away from their colleagues.

Certain professional radio systems offer lone-worker, man-down or emergency-alert functions that may support an organisation's arrangements for monitoring workers.

These features require appropriate configuration, coverage and response procedures.

They should be selected according to the risks identified and must not be assumed to provide a complete lone-working safety solution on their own.

Why Radio Procedures Matter as Much as the Equipment

Providing workers with professional radios does not automatically create an effective safety communication system.

Employees need to understand how and when the equipment should be used.

Where radio communication is important to an activity, site managers should consider establishing clear procedures covering:

• Who is authorised to issue instructions.
• Which radio channels or talkgroups are used.
• How important instructions are acknowledged.
• What terminology should be used to avoid misunderstandings.
• How emergency messages are identified and prioritised.
• What happens when radio contact is lost.
• How equipment is checked, charged and maintained.
• What alternative communication methods are available.

For safety-critical activities, confirmation that an instruction has been received and understood may be particularly important.

A misunderstood message can create a dangerous situation even when the radio equipment itself is functioning correctly.

Construction Site Communication and Safety Checklist

The following checklist is designed for construction site managers, project managers, health and safety managers and principal contractors reviewing their communication arrangements.

It can be used during site planning, inductions, safety reviews and toolbox talks.

Communication Planning

• Have communication requirements been considered in relevant site risk assessments?
• Are communication arrangements reflected in the construction phase plan and site rules where appropriate?
• Have activities requiring safety-critical communication been identified?
• Do employees know who is authorised to issue instructions?
• Are communication arrangements reviewed when site conditions change?

Radio Equipment and Coverage

• Is the selected radio equipment suitable for the working environment?
• Has coverage been assessed across the areas where radios will be used?
• Are known radio blackspots identified and addressed?
• Are equipment checks and battery-charging arrangements in place?
• Are radios and accessories suitable for the noise, weather and physical conditions on site?
• Are appropriate backup arrangements available if radio communication fails?

Lifting Operations and Mobile Plant

• Have communication methods been established for relevant lifting operations?
• Are crane operators and signallers familiar with agreed communication procedures?
• Is there a clear procedure for stopping operations if essential communication is lost?
• Are vehicle and pedestrian segregation arrangements in place?
• Are authorised traffic marshals trained in the communication methods they use?
• Are radio procedures supported by the necessary physical safety measures?

Emergency Arrangements

• Do workers know how to raise an alarm?
• Are emergency communication procedures included in site inductions?
• Can designated personnel be contacted when required?
• Are communication arrangements suitable for isolated working areas?
• Are emergency communication procedures periodically reviewed or tested?
• Are alternative methods available if the primary system is unavailable?

Training and Supervision

• Have radio users received appropriate instructions?
• Are important communication procedures covered during toolbox talks?
• Do employees understand how to acknowledge safety-critical instructions?
• Are communication problems reported and investigated?
• Are contractors informed of relevant site communication arrangements?
• Is responsibility for maintaining the communication system clearly assigned?

This checklist is a general review aid. It does not replace a site-specific risk assessment, competent safety advice, the construction phase plan or applicable legal requirements.

Should Two-Way Radios Be Included in a Construction Company's Health and Safety Plan?

Where two-way radios are used for site coordination or safety-related communication, it makes sense to document their role in the relevant health and safety arrangements.

The HSE's construction guidance provides a clear basis for addressing radio use within site rules.

A construction company's arrangements may also need to identify how radios support particular tasks, what communication procedures apply and how failures will be managed.

For example, a large construction project might include radio procedures within arrangements for lifting operations, traffic management, emergency response and coordination between contractors.

The level of detail should reflect the risks involved.

It is important to distinguish between using radios for routine operational convenience and relying on them for safety-critical communication.

Where communication is safety-critical, additional precautions may be necessary to ensure that equipment failures or misunderstood instructions do not create unacceptable risks.

Choosing a Suitable Two-Way Radio System for Construction

Construction sites can present challenging conditions for radio communications.

Background noise, steel structures, reinforced concrete, changing site layouts and substantial distances between teams can all affect the suitability of a particular system.

When selecting equipment, construction businesses should consider:

Coverage: Will employees be able to communicate throughout the areas where they work?

Audio clarity: Is speech understandable in the presence of machinery and other background noise?

Durability: Is the equipment suitable for dust, moisture and the physical demands of the site?

Ease of use: Can employees operate the equipment effectively while wearing appropriate protective equipment?

Emergency features: Are additional functions required to support the site's identified risks?

Reliability: Are there appropriate arrangements for charging, maintenance, fault reporting and communication failures?

A professional site survey can help identify potential coverage limitations before a system is deployed.

For larger projects, repeaters or alternative radio technologies may be appropriate, depending on the site and operational requirements.

Conclusion: Reliable Communication Is Part of Effective Safety Management

Construction site safety depends on proper planning, competent workers, effective supervision and suitable control measures.

Communication supports these arrangements by helping employees coordinate activities, understand instructions, report hazards and respond to emergencies.

The HSE recognises the importance of safety-critical communication and specifically identifies the use of radios as a subject to consider within construction site rules.

However, the 2026 SMW Limited prosecution also demonstrates why radio communication must be reliable, clearly understood and supported by appropriate safety controls.

For construction companies, the aim should not simply be to provide workers with radios.

It should be to establish effective communication arrangements that reflect the risks, activities and working environment of each site.

Professional Two-Way Radio Systems for Construction

DCS 2 Way Radio works with construction companies across the UK to provide professional radio communication solutions.

Whether a project requires handheld radios, extended site coverage, repeaters or communications across multiple locations, our team can help assess the requirements and recommend suitable equipment.

Planning or reviewing your construction site's communication arrangements?

Contact DCS 2 Way Radio to discuss your requirements and arrange a professional radio coverage assessment.

Sources

• HSE — Construction site rules and inductions

• HSE — Safety-critical communications

• HSE — Glasgow radio miscommunication incident, May 2026

• HSE — Banksmen and signallers

• HSE — Offshore crane operations guidance