Why preventing bridge strikes starts long before the bridge
Heavy vehicle safety in Australia has come a long way. Over the past decade, technologies such as Intelligent Speed Assistance, lane departure warning, collision avoidance systems and advanced telematics have become increasingly common across commercial fleets. While each addresses a different risk, they share a common purpose: giving drivers better information, earlier, so they can make safer decisions on the road. As vehicles become increasingly connected and safety technologies continue to mature, are there other longstanding challenges that could benefit from the same approach? DANIEL ANTONELLO — General Manager, Oceania, HERE Technologies — suggests there are, with bridge strikes being one of them.
Picture this. It’s just before six on a weekday morning. A prime mover hauling an excavator on a float is diverted around roadworks onto a street the driver has never used. They’re on schedule and following the instructions they were given. Two hundred metres ahead is a rail overpass with a 4.2 metre clearance. Their load sits at 4.4.
By the time they see the sign, they’re out of good options.
What happens next is familiar to anyone in transport safety. A hard brake, or a strike. The load shifts. The bridge is closed for inspection, trains are held, traffic backs up for kilometres. If the driver is lucky, they walk away shaken. Not everyone is lucky.
Every bridge strike begins long before a truck reaches a low-clearance structure. It starts with a routing decision, incomplete height or weight information available, or a moment where a driver, often operating in unfamiliar surroundings, creates an incident. The opportunity to prevent a strike has largely passed by the time a vehicle is metres from a bridge.
For decades, Australia has invested in protecting infrastructure from these incidents. Better signage, bridge protection beams, over height detection systems and route planning have all played an important role in reducing risk. These measures remain fundamental and continue to protect some of our most critical transport assets.
Yet bridge strikes continue to occur with surprising regularity.
Behind every incident is far more than damage to concrete or steel. Freight movements are interrupted, rail services delayed, commuters caught in congestion and emergency services diverted to manage avoidable disruptions.
The challenge is no longer simply one of infrastructure maintenance. It is one of economic resilience. That distinction matters.
Australia’s freight task is expected to continue growing as our population expands and supply chains become increasingly interconnected. Every unnecessary disruption has a ripple effect extending well beyond the point of impact, affecting businesses, communities and the reliability of the transport networks we all depend on. Government forecasts point to sustained growth in freight demand over coming decades, reinforcing the need to think differently about how avoidable disruptions are prevented.1
The next question for industry is whether we should also be placing greater emphasis on helping drivers avoid these situations altogether.
After all, this is the direction heavy vehicle safety has already taken.
From protecting infrastructure to supporting drivers
For many years, bridge strike prevention has understandably focused on protecting infrastructure. Road authorities and asset owners have invested heavily in engineering solutions that reduce the likelihood and consequences of an impact. Those investments remain essential.
The evolution of heavy vehicle safety, however, suggests the industry no longer needs to think in terms of either infrastructure or technology. Increasingly, the strongest safety outcomes are achieved when they work together.
That’s precisely how technologies such as Intelligent Speed Assistance, collision avoidance systems and lane departure warning have been adopted. Each adds another layer of protection by helping drivers make better decisions before an incident occurs.
Bridge height awareness has the potential to be viewed in much the same way.
Rather than relying solely on roadside infrastructure to alert drivers, connected mapping, vehicle dimensions and real-time route intelligence can provide information much earlier in the journey — when drivers still have time to make informed decisions and safely adjust their route.
Importantly, this isn’t about replacing existing infrastructure measures. It’s about complementing them.
Just as no one would suggest lane departure warning removes the need for lane markings, or collision avoidance systems eliminate the importance of driver alertness, digital height warnings and awareness should be viewed as another layer of protection within a broader safety ecosystem.
A shared opportunity for the industry
Whether bridge height awareness eventually becomes a more common feature across heavy vehicles is ultimately a matter for industry, not any single organisation.
Technology providers can continue improving the quality and accuracy of mapping and routing intelligence tailored for commercial vehicle operations. Fleet operators can assess where connected vehicle technologies improve operational safety and efficiency. Road authorities and infrastructure owners will continue investing in physical protection measures, while policymakers have an opportunity to observe how these technologies mature alongside changing freight demands.
That collaborative approach is important because the challenge itself continues to evolve.
As Australia’s freight task grows and supply chains become increasingly interconnected, avoiding disruption is becoming just as important as responding to it efficiently. Every avoided bridge strike protects more than a physical asset. It helps keep freight moving, reduces congestion, minimises disruption to rail services and improves the resilience of the broader transport network.
Preventing those outcomes starts well before a vehicle reaches a bridge.
It starts with ensuring drivers have the right information, at the right time, to make the right decision.
Moving the needle in heavy vehicle safety
Australia has spent decades making heavy vehicles safer. Bridge height awareness presents an opportunity to continue that evolution.
As advanced driver assistance technologies become increasingly common in heavy vehicles, there may also be an opportunity for industry and policymakers to consider how bridge height awareness fits within the broader evolution of vehicle safety. Much as technologies such as Intelligent Speed Assistance and lane departure warning systems are now widely recognised safety tools, in-cab height warnings can be another layer of protection for drivers operating in complex or unfamiliar environments.
Not because existing infrastructure measures are no longer effective, nor because technology alone can solve the problem, but because the most resilient transport networks increasingly rely on both.
The driver at the start of this story didn’t need a stronger bridge. They needed to know, an hour earlier, that they were never going to fit under it.
So, whether bridge height awareness ultimately becomes another layer of heavy vehicle safety is a question for the industry. As Australia’s freight task grows and our transport network becomes increasingly interconnected, it’s a conversation worth having.
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