Worker Safety & Collision Avoidance Vol I, No. 003, 2026

RTLS Field Guide  ·  Issue 003  ·  Spring 2026

A Comparative Study of Four Worker Collision-Avoidance Technologies

Worker

Safety.

How it actually works — and what it really costs, once the forklift meets the pedestrian in a live aisle.

Subject

Worker Collision Avoidance*.*

Technologies

Four*.*

Pages

01 – 04*.*

Editor

LocaXion

A note on the baseline

All numbers in this guide are modeled against a common baseline of 10 forklifts and 50 pedestrians in a 100,000 sq ft facility. Smaller fleets cost less; multi-shift operations and dense mixed-traffic sites scale up from here.

Contents — Four Technologies, Compared

1. 01  /  BLE BLE Wearables Cheap RSSI proximity alerts; the signal drops the moment a worker turns their back. Year 1 / 10 trucks, 50 workers$10k – $25k
2. 02  /  UWB UWB Ranging Wearables Sub-meter radial distance — but racks and guardrails still trigger false alarms. Year 1 / 10 trucks, 50 workers$25k – $60k
3. 03  /  CAM Fixed AI Cameras Wearable-free. Protection stops at the edge of the camera’s field of view. Year 1 / partial coverage$50k – $95k
4. 04  /  SLAM Smart Forklifts (AI Vision + SLAM) The AI rides on the forklift — zero wearables, and protection moves with the hazard. Year 1 / 10 trucks, unlimited pedestrians$35k – $75k

01

Chapter One · The Lanyard

BLE Wearables.

2.4 GHz is absorbed by human bodies. A worker turning their back drops the signal, and the alarm drops with it.

Best for

Checking a “safety box” on a tiny budget — not recommended for life-safety.

Cost range

$10k – $25k (yr 1, 10 trucks, 50 workers)

Infrastructure

BLE receiver on every forklift.

Wearable

Lanyard / hardhat tag, per worker.

Latency

Up to 1.5 s — 17 ft at 8 MPH.

§ 1.1  /  How It Works

You equip forklifts with a Bluetooth receiver and require workers to wear Bluetooth Low Energy (BLE) tags on their lanyards or hardhats. The forklift receiver uses RSSI (signal strength) to guess how close a worker is.1

If the signal is strong enough, it triggers a strobe light or buzzer in the cab.

§ 1.2  /  Cost Breakdown — 10 Trucks, 50 Workers

Real Talk

BLE is fundamentally flawed for life-safety. It operates on 2.4 GHz, which is highly absorbed by water in human bodies. If a worker turns their back to a forklift, the signal drops and the system thinks they are 30 feet away instead of 3. BLE latency can take up to 1.5 seconds to register — at 8 MPH, a forklift covers 17 feet before the alarm sounds. It does not work effectively.

Figure 1.1Signal degradation through the body.Side elevation of a forklift receiver and a worker with a BLE lanyard. The 2.4 GHz arc degrades sharply where it must pass through the worker’s torso — the system reads a strong tag as if it were 30 ft away.

02

Chapter Two · The Bubble

UWB Ranging Wearables.

Sub-meter radial distance. Every worker must wear a tag every day. The racks still trigger false alarms.

Best for

The legacy standard — decent proximity alerts, disruptive to operations.

Cost range

$25k – $60k (yr 1, 10 trucks, 50 workers)

Infrastructure

UWB receiver on every forklift.

Wearable

Active UWB tag, charged daily.

Accuracy

±10 – 30 cm radial (LoS).

§ 2.1  /  How It Works

You place a UWB receiver on the forklift and distribute active UWB wearable tags to all workers. UWB is highly accurate, measuring exact radial distance via Time-of-Flight.2

If a tag gets within a predefined bubble around the forklift, the system triggers alarms or automatically governs the truck’s speed down to a crawl.

§ 2.2  /  Cost Breakdown — 10 Trucks, 50 Workers

Real Talk

Solves latency. Cannot understand physical context. UWB cannot tell that a rack or guardrail is between the forklift and the worker, so it triggers false alarms constantly. It also depends on every worker wearing and charging a tag every day.

Figure 2.1Radial bubble ignores barriers.Top-down plan view. A radial safety bubble around the forklift alarms on anything inside it — regardless of whether a rack column physically stands between the truck and the worker.

03

Chapter Three · The Ceiling Eye

Fixed AI Cameras.

Wearable-free. But the protection stops at the edge of the camera’s field of view.

Best for

Specific high-risk blind corners and major intersections.

Cost range

$50k – $95k (yr 1, partial coverage)

Worker tag

— none — wearable-free.

Infrastructure

Ceiling AI cameras + PoE cabling.

Coverage

Fixed cones — field-of-view only.

§ 3.1  /  How It Works

You mount smart AI cameras to the ceiling above major blind intersections or high-traffic walkways. The AI vision algorithms identify forklifts and pedestrians simultaneously.3

When the system detects a collision course, it triggers a projected warning light or audible alert at that location.

§ 3.2  /  Cost Breakdown — 100k sq ft, Partial Coverage

Real Talk

Zero worker compliance required. Coverage ends at the field of view. AI Vision works because it requires nothing of the worker. But fixed cameras are expensive to scale, and the moment a forklift leaves the camera’s field of view, protection disappears.

Figure 3.1Fixed vision cones, fixed blind spots.Top-down plan of a T-intersection. Two ceiling cameras cast overlapping cones of vision over the crossing; one forklift and one pedestrian sit inside and are detected. A second forklift has passed beyond the cone and is invisible to the system.

04

Chapter Four · The Ultimate Standard

Smart Forklifts (AI + SLAM).

The AI rides on the forklift. Zero wearables. Protection moves with the hazard, everywhere the truck drives.

Best for

The ultimate standard — wearable-free, 100% active coverage everywhere the truck drives.

Cost range

$35k – $75k (yr 1, 10 trucks, unlimited pedestrians)

Worker tag

— none — wearable-free.

Infrastructure

None. All hardware on-forklift.

ROI behaviour

Scales with fleet, not headcount.

§ 4.1  /  How It Works

Instead of putting tags on workers or cameras on your ceiling, you put the AI directly onto the forklifts. A smart camera unit mounts to the forklift chassis and processes a 360-degree view.4

When a pedestrian enters the hazard zone, the forklift can automatically slow down or trigger an alert.

§ 4.2  /  Cost Breakdown — 10 Trucks, Unlimited Pedestrians

Real Talk

The safety system moves with the hazard. No wearable dependency, no blind-spot-only protection, no daily compliance issue. The hardware cost is per truck, not per person, so protection scales with your fleet — not your headcount.

Figure 4.1Onboard AI, 360° perception.Side view. A 360° perception ring travels with the forklift. A pedestrian in the near zone is flagged DANGER; a second worker beyond the ring is SAFE. No wearables, no ceiling infrastructure — the envelope rides on the truck.

Chapter Five · § 5 · Synthesis

Which technology is right for you?

Every facility is different. Use this as a starting point, not a final answer.

★   Smart Forklifts are highlighted because the cost is fixed to the forklifts. You gain 100% active coverage without forcing a single worker to wear a tag.

Colophon · Next Steps

Not sure which worker-safety tier fits your operation?

LocaXion guides worker-safety and collision-avoidance projects from first assessment through full deployment — without locking you into a single vendor or technology. Every recommendation is based on your facility, your mixed-traffic patterns, and the actual ROI math for your fleet.

Book an assessment → Visit locaxion.com

Footnotes

1. BLE operates on the 2.4 GHz band; RF attenuation through human tissue is typically 10 – 30 dB depending on orientation and tag position.
2. UWB Time-of-Flight typical accuracy is ±10 – 30 cm under line-of-sight conditions.
3. Fixed AI camera coverage depends on mount height and lens choice; typical effective detection radius is 10 – 20 m per camera at 3 – 5 m mount height.
4. “SLAM” — Simultaneous Localization and Mapping — is a family of algorithms that estimate pose and build a map from the same sensor stream.

LocaXion  Field Guide Vol. I · No. 003 · Worker Safety © 2026  /  set in Fraunces & Source Serif 4