What Heavy Vehicles Can’t See: Understanding Blind Spot Risk and the Case for Active Monitoring

We are blind to the blind spots.

Simply watch this video to see how people are exposed to fatal accidents due to the blind spots in heavy vehicles. Not because they moved. Not because the driver was distracted. Simply because of where they were standing.

Heavy vehicles pose a significant and often underestimated threat to pedestrians and cyclists (Vulnerable Road Users - VRUs). There is a widespread lack of education around the sheer number of blind spots that exist around a standard heavy vehicle. They are zones that render people completely invisible to a driver, regardless of their skill or experience.

Blind spot exposure is more extensive than most people realise - including, in many cases, those outside the cab. The zones where a person can be standing completely unseen are often larger, and closer to the vehicle, than a first impression suggests.

The Scale of the Risk

Blind spot incidents are a well-documented and recurring cause of serious injury and death on Australian roads. In fact, most commercial vehicles have blind spots across 40% of their vehicle’s surrounds - a figure that surprises many people who assume mirrors provide comprehensive coverage. According to the National Road Safety Strategy, 28 per cent of cyclist fatalities in Australia involve a heavy vehicle. Heavy vehicles are disproportionately involved in these crashes, and collisions frequently occur in the zones immediately surrounding the vehicle.

The National Heavy Vehicle Regulator (NHVR) identifies blind spot collisions as one of the key safety risks that organisations are expected to manage. Under the Chain of Responsibility (CoR) framework, that obligation extends beyond drivers to include fleet operators, managers and the organisations that procure and contract heavy vehicle services.

Where the Blind Spots Are

A standard heavy vehicle has six distinct danger zones where blind spot exposure is greatest: front, front corners, sides and rear. Understanding each one is a starting point for managing risk.

• Front nose: A driver may be unable to see a person standing within several metres of the front of the cab, including children or anyone crouching.
• Front corners: The transition zones between the front and sides of the vehicle create additional blind exposure, particularly relevant during slow-speed manoeuvres in congested yards or loading areas.
• Left side: The most dangerous zone. Cyclists filtering left during a left-hand turn are at particularly high risk.
• Right side: Significant blind zones remain along the vehicle’s length, particularly when turning.
• Rear: Reversing incidents are among the most common. Mirrors alone leave substantial gaps in coverage.

For a detailed breakdown of these zones and recommended controls, refer to the NHVR Blind Spot Factsheet.

How to Identify Blind Spots in Your Fleet

Awareness alone does not reduce risk. Before appropriate controls can be put in place, organisations need to understand where blind spot exposure exists across their specific vehicle types. There are several practical steps to get started.

• Walk-around assessments: Have a colleague stand at various positions around the vehicle while the driver remains seated and reports what they can and cannot see through the mirrors alone.
• Mirror audits: Check that all mirrors are correctly adjusted, in good condition and providing the coverage they are designed for. Damaged or misaligned mirrors significantly expand existing blind zones.
• Review near-miss data: Look for patterns in incident and near-miss records across your fleet. Recurring left-side or reversing incidents may point to systemic blind spot exposure that training alone has not resolved.
• Engage your drivers: Drivers who operate these vehicles daily often have a practical understanding of where visibility is limited. Structured conversations can surface risks that formal assessments miss.

The Case for Active Blind Spot Monitoring

Under the CoR framework, organisations must implement controls that are reasonably practicable given the level of risk involved. As safety technology has become more accessible, specifying technology-based controls is increasingly expected, not optional.

Blind spot monitoring technology actively detects people and objects in blind zones and alerts the driver in real time. When a hazard is detected, the driver receives an immediate audible and visual warning before an incident occurs.

Research by the Insurance Institute for Highway Safety found that vehicles equipped with blind spot monitoring experience a 14 per cent reduction in lane change crashes, rising to 23 per cent when combined with rear cross-traffic alert.

For fleet operators, these systems also provide a verifiable layer of safety that supports compliance with CoR obligations.

For procurement teams, specifying blind spot monitoring within tender documentation establishes a consistent safety baseline across contractor fleets.

SGESCO’s Protect 360 AI suite is purpose-built to address this. The solutions within Protect 360 AI combine to provide total coverage across all six danger zones - front, front corners, sides and rear. Modular by design, it allows organisations to protect priority blind spots first, such as the side and rear, with the flexibility to add additional zones progressively as operational needs and budget allow.

Taking the Next Step

Heavy vehicle blind spots are a known, foreseeable and manageable risk. And the technology to manage the risk is becoming a standard practice across leading fleets.

Whether you are a fleet operator reviewing your vehicle safety specifications, or a procurement team setting contractor requirements, the starting point is to move from awareness to action.

Explore SGESCO’s blind spot monitoring solutions today.