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Australia’s roads are full of giant cars, and everyone pays the price. What can be done?
Milad Haghani, The University of Melbourne
You may have noticed — there’s a car-size inflation on Australian roads that some have nicknamed car “mobesity”.
Most SUVs and utes from a decade or two ago look small next to today’s models.
As we head for a fifth consecutive year of rising road deaths and what could be the worst year for pedestrian fatalities in nearly two decades, it’s time to look more closely at what this means.
We already know bigger cars cause greater impacts in collisions.
But what’s less discussed is whether driving one also changes how we drive – if larger vehicles make us feel safer inside them, do they also make us take more risks behind the wheel?
What’s driving this trend?
Four in five new cars sold in Australia are SUVs or utes – more than double the share of 20 years ago.
This isn’t purely consumer-driven.
With no domestic car manufacturing, Australia imports vehicles shaped by global production trends, many of which trickle down from United States policies that reward larger vehicles.
Two subtle US policy features explain why.
First, the “SUV loophole”: under US law, most SUVs are classified as light trucks, meaning they’re subject to less stringent fuel-efficiency and crash-safety standards than passenger cars.
Second, under US fuel economy rules, fuel-efficiency targets are adjusted based on the size of the vehicle’s “footprint” — the area between its wheels. In practice, this means larger vehicles are allowed to consume more fuel while still meeting the target.
Together, these rules have encouraged American manufacturers to build and sell heavier SUVs and utes.
Large vehicles can deliver significantly higher profit margins than small cars.
These trends have resulted in more bigger cars being driven on Australian roads.
The combination of high car ownership, years without fuel efficiency rules, and the luxury-car-tax exemption that many utes qualify for has made Australia a highly lucrative market for large, high-emission models.
Marketing has played a significant role too: in 2023, car makers invested about A$125 million in SUV and 4×4 advertising in Australia – a 29% increase from the previous year.
The dangers of bigger vehicles
There’s a physical mismatch between large and small vehicles that usually transfers the danger from the occupants of the bigger car to everyone else.
While the risks of being hit by a large SUV or ute might seem self-evident, the question is how much greater those risks are.
Research provides a clear answer.
Car-to-car collisions:
Collisions between large SUVs and smaller cars show occupants of a smaller vehicle face about 30% higher risk of dying or sustaining serious injury.
A 500kg increase in vehicle weight is linked to a 70% higher fatality risk for occupants of the lighter car.
For every fatal accident avoided inside a large vehicle, there are around 4.3 additional deaths among other road users.
Car-to-pedestrian and cyclist collisions:
Pedestrians struck by SUVs are about 25% more likely to sustain serious injuries and 40–45% more likely to die than those hit by smaller cars.
For children, the outcomes are far worse: they are up to eight times more likely to die when hit by an SUV than by a small car.
Each 10cm increase in front-end height raises the fatality risk for pedestrians by roughly 20%.
Tall and blunt fronts (vertical or nearly upright front design) are associated with more than a 40% increase in pedestrian death when compared with low and sloped front ends.
These differences help explain why US pedestrian deaths — once on a steady decline — have climbed back to their highest level since the early 1980s.
This is while most countries have reduced pedestrian fatalities.
Bigger cars, more risk-taking?
Evidence from multiple countries suggests driving larger vehicles may lead to more confident or risk-prone behaviour:
India: SUV owners recorded 20–25% higher risk-taking scores than sedan or hatchback drivers
Israel: an analysis of 1.5 million speeding citations found drivers received about a quarter more speeding tickets when vehicle mass was 10% heavier
Austria: roadside observations of 48,000 vehicles showed SUV drivers more frequently drove without seatbelts, used phones and ran red lights. Women SUV drivers showed violation rates similar to men, breaking the usual pattern of higher female caution in traffic studies
New Zealand: field data found SUV drivers 1.5 times more likely to drive one-handed, a behaviour linked to lower perceived risk and reduced vigilance
Germany: large-car drivers reported higher rates of traffic violations and risky driving.
Policy can make a difference
Taxes and size-dependant registration fees could potentially offset some of the extra costs of heavier vehicles on roads surfaces, congestion and emissions, or regulate demand.
Two measures would make a tangible difference:
Licence testing by vehicle class
Many drivers obtain their licence in a small sedan but can legally drive a two-tonne ute the next day. Yet, larger vehicles demand different manoeuvring skills, longer braking distances and greater spatial awareness.
Requiring a practical test in a vehicle of comparable size to what the driver intends to drive (or a streamlined license upgrade for an experienced driver when upsizing) would acknowledge that added responsibility.
The reform would also carry a symbolic message: driving a heavier vehicle comes with greater responsibility.
Penalties scaled to impact potential
A ute or SUV travelling 10kmh over the limit carries greater kinetic energy and longer stopping distance than a small sedan.
A tiered approach – where fines or demerit points scale with vehicle mass – would better reflect the disproportionate risk that bigger cars pose.
If Australia is serious about reducing road trauma, these are the kinds of targeted, evidence-based adjustments that should be considered.![]()
Milad Haghani, Associate Professor and Principal Fellow in Urban Risk and Resilience, The University of Melbourne
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Zlaťáky.cz/Pexels, CC BY
Angel Zhong, RMIT University and Jason Tian, Swinburne University of TechnologyThe start of 2026 has seen gold and silver surge to record highs – only to crash on Friday.
Gold prices peaked above US$5,500 (A$7,900) per ounce for the first time on Thursday, well above previous highs. But by the end of Friday, it had dropped to around US$5068 (A$7,282).
Silver had been making gains even faster than gold. It hit more than US$120 (A$172) per ounce last week, marking one of its strongest runs in decades, before crashing on Friday to US$98.50 (A$141.50).
So what’s behind those surges and falls? And what should everyday investors know about the risks of investing in precious metals right now?
Why gold has been hitting new highs
Gold is the classic safe haven: an asset people buy to protect their savings when worried about financial risks.
With international political tensions rising, trade war threats, shifting signals about where interest rates are heading and a potential changing world order, investors are seeking assets that feel stable when everything else looks shaky.
Friday’s crash in gold and silver was sparked by financial markets reacting to early news of Donald Trump’s nomination of Kevin Warsh as chair of the US Federal Reserve. The US central bank plays a key role in global financial stability.
Central banks around the world have been buying gold at a rapid pace, reinforcing its reputation as a place to park value during periods of uncertainty.
But it’s not just big institutions moving the market. In Australia and overseas, retail investors – individuals buying and selling smaller amounts for themselves – have played a part too.
Those individuals have been increasingly treating gold, silver and other precious metals as a hedge against so much uncertainty, as well as a momentum play – trying to buy in to keep up with others.
As prices have trended upward, more everyday investors have bought in, especially through gold exchange-traded funds (ETFs), which make it simple to gain exposure without storing physical gold bullion.
What’s been driving silver’s surge
While gold was grabbing headlines for much of 2025, silver has been the real showstopper. Before Friday’s fall, the metal had surged more than 60% in just the past month, far outpacing gold’s still impressive run of around 30%.
Unlike gold, silver has a split personality. Industrial uses are driving up demand for silver. It’s critical for clean energy technologies including solar panels, electric vehicles (EVs), and semiconductors.
This dual appeal – as a safe haven, but also as an in-demand industrial commodity – is drawing investors who see multiple reasons for prices to keep climbing.
Every solar panel contains about 20 grams of silver. The solar industry consumes nearly 30% of total global demand for silver.
EVs also use 25–50 grams each, and AI data centres need silver for semiconductors.
The kicker? The silver market has run a supply deficit for five consecutive years. We’re consuming more than we’re mining, and most silver comes as a byproduct of other metals. You can’t simply open more silver mines.
Individual buyers have piled into silver
One of Australia’s most popular online investment platforms for retail investors is CommSec, with around 3 million customers.
Bloomberg tracking of CommSec trades shows how much retail purchases of silver ETFs in particular have spiked higher in the past year.
Over the past year, gold ETF trades on CommSec grew 47%, with cumulative net buying reaching A$158 million. That reflects gold’s established role in portfolios.
Yet despite attracting slightly lower total investment overall at A$104 million, silver trading activity exploded by far more: it’s been 1,000% higher than the year before.
This means retail investors made far more frequent, smaller trades in silver. This is classic momentum-chasing behaviour, as everyday investors piled into an asset showing dramatic price gains.
The pattern is unmistakable: while gold remains the anchor, silver has become the speculative play.
Its lower per-ounce price, industrial demand narrative, and social media buzz make it particularly accessible to retail investors seeking exposure to the precious metals rally, at a much lower price than gold.
The risks every investor needs to know
The data shows Australian retail investors have been buying as prices rise. But this “fear of missing out” approach comes with serious risks.
Volatility cuts both ways. From February 2025 to just before Friday’s sharp drop, the price of silver had surged 269%. But even before that fall, silver’s spectacular gain had come with 36% “annualised volatility” (which measures how much a stock price varies over one year). That was nearly double gold’s 20% volatility over the same period.
What does that mean in practice? As we’ve just seen, what goes up fast can come down quickly too.
Buying high is dangerous. When retail investors pile in after major price increases, they often end up buying near the top. Professional investors and central banks have been accumulating gold and silver for years, at much lower prices.
No income, higher risk. Unlike shares or bonds, metals don’t pay dividends or interest. Your entire return depends on prices rising further from already elevated levels. And as the past few days have shown, the potential for sharp drawdowns is substantial.
Keep it modest. Financial advisers typically recommend precious metals comprise 5–15% of a diversified portfolio. After such extraordinary price volatility, that guideline matters more than ever.
Disclaimer: This article provides general information only and is not intended as financial advice. All investments carry risk.![]()
Angel Zhong, Professor of Finance, RMIT University and Jason Tian, Senior Lecturer, Swinburne University of Technology
This article is republished from The Conversation under a Creative Commons license. Read the original article.