SensorZone PW Core proximity warning system installed on heavy machinery at an active construction site

Proximity Warning for Construction

Our mission is to stop incidents between people and vehicles in construction environments.

Proximity Warning for Construction

Our mission is to stop incidents between people and vehicles in construction environments.

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CAT construction roller with SensorZone proximity warning detection field visualised around the vehicle on a construction site

Construction is one of the most hazardous industries for vehicle to pedestrian collisions, with over 15,000 workers being injured in the United States across 2023 and 2024.

We recognize that different construction environments and projects all have specific requirements. That's why we have developed an ecosystem of safety products that allow you to choose the best option for your needs - from advanced Al camera detection systems to market-leading proximity warning technology - all backed up by a comprehensive online data analysis dashboard.

Our Solutions

Proximity Warning Core

Tag-Based Proximity Detection

Proximity Warning Core uses RFID personnel tags and vehicle-mounted antennas to detect workers in a full 360-degree field around heavy machinery.

SensorZone Proximity Warning Core tag-based detection system for construction and mining sites
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Vision360

AI Camera-Only Detection

A standalone camera detection system that uses advanced AI to detect people and vehicles.

Delivers colour-coded distance alerts and the option to live stream and download video clips.

SensorZone Vision360 AI camera-only proximity detection system for rental fleets and subcontractor sites
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Proximity Warning Plus

Tag + Camera Hybrid Detection

Proximity Warning Plus adds AI camera detection on top of Core tag-based technology, creating a dual-layer safety system that is widely seen as the gold standard in proximity alert safety.

SensorZone Proximity Warning Plus hybrid tag and camera detection system for mixed-traffic worksites
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Why Construction Companies Choose SensorZone

One-Hour Install

Retrofit any construction vehicle without taking it out of service for a full day.

Works Everywhere

No GPS or cellular dependency. Operates underground, in tunnels, and in GPS-denied environments.

IP67 Rugged Hardware

IP67-rated components withstand dust, rain, impact, and vibration on active construction sites.

Flexible Product Options

Choose the system that best suits your current requirements, with the option to layer additional products on top in future.

OSHA & HSE Alignment

Supports compliance with OSHA workplace safety guidelines and UK HSE Construction Safety guidance.

AI-Powered Analysis

Surface patterns, predict risk areas, and deliver actionable recommendations,

The Site Risks We Address

From excavator blind spots to congested haul roads, construction sites present unique challenges that standard safety measures cannot fully address. SensorZone provides targeted solutions for each.

Excavator Blind Spots

The low-visibility zone around an excavator extends several metres in every direction, and the noise masks approaching workers. Proximity Warning Core's RFID tags essentially eliminate blind spots in a full 360-degree field, alerting the operator even when the worker is completely invisible from the cab.

Reversing Machines

Reversing machines account for many serious workplace incidents in construction each year. SensorZone provides active reversing protection - via cameras and/or tags - that delivers direct alerts to both the driver and any worker in the reverse path.

Congested Haul Roads

On large construction sites, haul roads carry a continuous flow of dump trucks, concrete mixers, and delivery vehicles alongside pedestrian workers. Vision360 cameras at intersection points detect people and vehicles without requiring tags, providing an additional layer of protection.

Pedestrian and Vehicle Intersections

Where pedestrian walkways cross vehicle routes, the risk of collision escalates. SensorZone detects tagged workers approaching active vehicle paths and triggers simultaneous alerts to both the machine operator and the worker, preventing incidents at the most dangerous points on site.

Trusted by Leading Construction Companies

We're proud to be the proximity warning system supplier of choice by some of the world's leading construction companies.

Construction industry logos including Webber, Komatsu, Forgen, Ferrovial, Sunbelt Rentals, and Underground Construction Company - trusted SensorZone customers
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Turn Construction Safety Data into Actionable Intelligence

Every proximity event on your construction site is logged and transmitted to the SensorZone Insights Platform. This cloud-based dashboard transforms raw detection data into intelligence that helps you prevent incidents before they happen.

SensorZone Proximity Warning Core tag-based detection system for construction and mining sites

Site Heat Maps

Visualize exactly where near-miss incidents concentrate across your construction site. Use heat maps to redesign traffic routes, reposition barriers, and enforce pedestrian exclusion zones in the highest-risk areas.

SensorZone Proximity Warning Core tag-based detection system for construction and mining sites

Outlier Identification

Automatically surface anomalies in your safety data. The Insights Platform flags unusual patterns such as spikes in poor safety performance, repeat offenders, or operators consistently not acknowledging alerts, so you can intervene before incidents occur.

SensorZone Proximity Warning Core tag-based detection system for construction and mining sites

Behavior Trend Analysis

Track how worker and operator safety behaviors change over time. Identify those causing the most risk, monitor the effectiveness of coaching and toolbox talks, and measure whether site interventions are reducing near-miss frequency.

SensorZone Proximity Warning Core tag-based detection system for construction and mining sites

AI Recommendations

Our powerful Insights Platform AI consistently monitors and analyses your site safety data in the background, pulling out quick summaries on what's going well, what needs improvement, and recommended actions.

Get More Information

Are you interested in piloting Proximity Warning Core for your organization or work site? If you are - or if you just want to speak to a member of our team - please fill out the short form below and we'll get back to you.

Frequently Asked Questions

Do workers from different contractors need separate tags?

No. All workers on site carry the same SensorZone RFID tag. Tags can be assigned and tracked centrally through the Insights Platform regardless of which contractor the worker belongs to. This makes site-wide coordination straightforward even when multiple contractors are operating simultaneously.

What if we have a mix of permanent plant and hired equipment?

Proximity Warning Core can be permanently installed on owned plant, while SensorZone Flex can be temporarily attached to hired or temporary equipment. Both systems use the same tags and feed into the same Insights Platform, giving you unified coverage across your entire fleet.

How do proximity warning systems work, and are they effective on construction sites?
A proximity warning system places a detection zone around every construction vehicle on site. Pedestrian workers wear a small RFID tag that triggers an alarm if they enter the detection zone. Both the operator and the worker receive simultaneous alerts, creating shared responsibility for safety. Systems like SensorZone also feed every event into a cloud dashboard, generating heat maps and trend data that help site managers identify high-risk areas and take preventative action.
What is the most effective method to prevent collisions between workers and vehicles on construction sites?
The most effective method is to deploy a tag-based proximity warning system. Unlike traditional approaches that rely solely on operator awareness, a PWS shares responsibility between operators and pedestrian workers by giving active alerts to both parties. Since SensorZone began being deployed on construction sites in the United States in 2021, there has not been a recorded incident between workers and machines on a site using the system.

How do proximity warning systems work, and are they effective on construction sites?

A proximity warning system places a detection zone around every construction vehicle on site. Pedestrian workers wear a small RFID tag that triggers an alarm if they enter the detection zone. Both the operator and the worker receive simultaneous alerts, creating shared responsibility for safety. Systems like SensorZone also feed every event into a cloud dashboard, generating heat maps and trend data that help site managers identify high-risk areas and take preventative action.

What is the most effective method to prevent collisions between workers and vehicles on construction sites?

The most effective method is to deploy a tag-based proximity warning system. Unlike traditional approaches that rely solely on operator awareness, a PWS shares responsibility between operators and pedestrian workers by giving active alerts to both parties. Since SensorZone began being deployed on construction sites in the United States in 2021, there has not been a recorded incident between workers and machines on a site using the system.

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